I ________ work out the problem at first, but after my teacher showed me an example, I ________ get the answer easily.
#63120
A
couldn’t; was able to
B
can’t; could
C
wasn’t able to; could
D
was able to; was able to
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——Can I walk across the road now, mum?——No, you_______. You have to wait until the light turns green.
#75668
A
couldn't
B
shouldn't
C
mustn't
D
needn't
— Must I do the rest of the work today?— No, you _________ finish it tomorrow.
#75861
A
must
B
can
C
needn’t
D
can’t
Mary _______ be in the hospital. I saw her play basketball a minute ago.
#62940
A
mustn’t
B
shouldn’t
C
can’t
D
may not