——You didn’t wait for Mr. Black last night, did you?——No, but we ____. He didn’t return home at all.
#89422
A
couldn’t have
B
needn’t have
C
didn’t need to
D
should wait have
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He ________ all his aims. But his efforts in the past few years have been praise-worthy.
#86843
A
could have achieved
B
wouldn’t have achieved
C
must have achieved
D
may not have achieved