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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---There is somebody knocking at the door. Who________ it be?---I’m not sure. It ________ be a postman.
#75825
A
may; must
B
will; can
C
can; may
D
may; will
—Could I invite my friends to my birthday party?—Sorry, you ______.
#75471
A
can
B
can’t
C
could
D
couldn’t
---Can people drive after drinking a glass of beer?---No. According to the law they _________.
#74316
A
mustn’t
B
can’t
C
needn’t
D
shouldn’t
— Must we wear our school uniform this afternoon?— No, you. All of us will go on an outing.
#75739
A
mustn't
B
can't
C
needn't
D
couldn't