Living in a fast-paced world, we                  get left behind if we stop learning.
#62355
A
should
B
dare
C
may
D
need
推荐题目
 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
I ___________ through that bitter period without your generous help.
#63240
A
couldn’t have gone
B
didn’t go
C
couldn’t go
D
hadn’t gone
—Must I water the flowers now?  —No, you ________ . You __________ do it later.
#74201
A
mustn’t, must
B
mustn’t, may
C
needn’t, may
D
needn’t, must