—Let’s go to watch the cosplay show! —Sorry, I       . I have to go to my guitar lesson. 
#74411
A
shouldn’t
B
mustn’t
C
needn’t
D
can’t
推荐题目
Some teenagers would rather _____ than _______ in their spare time. 
#75991
A
play computer games, doing exercise
B
to play computer games, to do exercise
C
play computer games, do exercise
D
playing computer games, do exercise
 My sister met him at the street yesterday afternoon, so he __________ your lecture.
#63076
A
shouldn’t have attended
B
needn’t have attended
C
mustn’t have attended
D
couldn’t have attended
He ________ to swim when he was five.
#78264
A
can
B
could
C
can be able
D
was able