Tom ____his homework yesterday, because
题型:选择题
问题:
Tom ____his homework yesterday, because he was in hospital all day.
A.can’t finish
B.couldn’t finish
C.couldn’t have finished
D.mustn’t finish
Tom ____his homework yesterday, because he was in hospital all day.
A.can’t finish
B.couldn’t finish
C.couldn’t have finished
D.mustn’t finish