Поменяйте active voice на passive voice. a) A famous artist painted this picture b) The director has just signed the litter. c) Who wrote this poem? d) They pay him regularly. e) He will show us some new photos.

a) A famous artist painted this picture.
→ This picture was painted by a famous artist.

b) The director has just signed the letter.
→ The letter has just been signed by the director.

c) Who wrote this poem?
→ Who was this poem written by?
(Более естественный вариант по смыслу: Who was this poem written by? / By whom was this poem written?)

d) They pay him regularly.
→ He is paid regularly.

e) He will show us some new photos.
→ Some new photos will be shown to us (by him).
Также возможно: We will be shown some new photos (by him).