---Must I go to the gym three times a week? ---No, you ______. Twice a week is OK.
#63671
A
mustn’t
B
needn’t
C
can’t
D
shouldn’t
推荐题目
 We ________ here on time but we were caught in a traffic jam.
#62326
A
must have arrived
B
could have arrived
C
need have arrived
D
should have arrived
 —Why are you late again?—Something happened to our friend Wang Fei. I _____ to help him.
#62788
A
did refuse
B
needn’t have refused
C
couldn’t well refuse
D
did not say no