Она не должна была закрывать окно так быстро, надо было проветрить комнату получше.

Выберите один ответ:

a. She mustn’t have closed the window so quickly, she should air the room a bit better.

b. She isn’t to have closed the window so quickly, the room should have been aired better.

c. She mustn’t close the window so quickly, she must have aired the room a bit better.

d. She shouldn’t have closed the window so quickly, she should have aired the room a bit better.