Lisa wrote a letter in the morning, but Bob _______.
#41603
A
doesn’t
B
don’t
C
didn’t
D
wasn’t
推荐题目
Do you know when the basketball_________?
#37140
A
is invented
B
was invented
C
has invented
D
had invented
The scientists ________ on the new medicine for two years. They will succeed in no time.
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A
work
B
are working
C
have worked
D
will work
Mr. Green ___ to the manager now. You’d better call him later.
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A
talk
B
talked
C
is talking
D
was talking
—You look worried. What’s the matter? —I _____ the exam yesterday.
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A
fail
B
fails
C
failed
D
will fail