1) I was really disappointed with John when he failed his exams. 2) When did the southern part of the country separate from its northern part? 3) Little Johnny's knowledge of computers is advanced for his age. 4) Have you applied for a visa yet? 5) Mr Gregory Wolf is a very difficult person to deal with. 6) You can apply to Mrs Lucy Harrison for advice. 7) At last we have arrived at this conclusion. 8) Despite his terrible injuries he wouldn't give up the struggle for life. 9) Fifty per cent of road accidents result in head injuries. 10) We've made a lot of plans. Now we must put them into practice. 11) What sea separates Ireland from Great Britain? 12) Who is carrying out the research on the topic?

I was really disappointed with John when he failed his exams.
This sentence expresses a personal feeling of disappointment towards John due to his failure in exams. The speaker seems to have expected better performance from John, which could indicate a certain level of trust or hope in his abilities.

When did the southern part of the country separate from its northern part?
This question likely refers to a historical event of political or territorial separation between two regions of a country. The southern part of the country separating from the northern part typically implies a division or secession, such as what happened in various countries throughout history, like the division of the United States during the Civil War or the split between North and South Korea.

Little Johnny's knowledge of computers is advanced for his age.
This sentence describes Johnny’s proficiency with computers, noting that his understanding surpasses what is typically expected for someone of his age. It suggests that Johnny is particularly skilled or knowledgeable in this area.

Have you applied for a visa yet?
This is a direct question asking whether the person has completed the process of applying for a visa. It’s often asked when someone is preparing to travel to another country and needs to confirm the completion of necessary documentation.

Mr Gregory Wolf is a very difficult person to deal with.
This statement highlights that Gregory Wolf is challenging to interact with, possibly due to his personality or behavior. It suggests that he may be demanding, unreasonable, or hard to communicate with effectively.

You can apply to Mrs Lucy Harrison for advice.
Here, the speaker is suggesting that Mrs. Lucy Harrison is a suitable person to turn to for guidance. The use of "apply" implies a formal or structured process, and the statement directs the listener to seek help from Mrs. Harrison specifically.

At last we have arrived at this conclusion.
This statement suggests that after much deliberation or investigation, the speaker and others involved have reached a decision or conclusion. The phrase "at last" implies that this conclusion was a long time coming or that it was anticipated after a prolonged period.

Despite his terrible injuries he wouldn't give up the struggle for life.
This sentence commends the person’s resilience in the face of severe injuries. It emphasizes the person’s determination to survive and keep fighting, showing their inner strength and refusal to give in to adversity.

Fifty per cent of road accidents result in head injuries.
This is a factual statement that indicates the severity of road accidents and how often they lead to head injuries. It highlights a serious concern about safety on the roads and the potential consequences of accidents.

We've made a lot of plans. Now we must put them into practice.
This statement reflects the transition from planning to action. It suggests that the necessary preparations have been completed, and now the time has come to implement those plans and turn them into tangible results.

What sea separates Ireland from Great Britain?
This question asks for the name of the body of water that divides Ireland from Great Britain. The correct answer would be the Irish Sea, which lies between the two islands in the British Isles.

Who is carrying out the research on the topic?
This is an inquiry into the person or group responsible for conducting research on a particular subject. It seeks to identify the individuals or organization involved in the research process.