------Tom is never late for work. Why is he absent today?------ Something _______ to him.
#101563
A
must have happened
B
can have happened
C
must happen
D
can happen
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Although medical science ______ control over several dangerous diseases, what worries us is that some of them are returning.
#104618
A
achieved
B
has achieved
C
will achieve
D
had achieved
—Why can’t you catch my question? —Sorry. I _______a magazine.
#103007
A
read
B
was reading
C
had read
D
am reading
– Why isn’t the recorder ready yet?--- I’m sorry, sir. It ______ in the factory.
#102923
A
is being repaired
B
is repaired
C
has been repaired
D
hasn’t repaired
—Though it in the desert most of the year, people still live there.—That’s the case. They say east or west home is the best.
#102372
A
hasn’t rained
B
didn’t rain
C
doesn’t rain
D
hadn’t rained
——I let my secretary call you several times. Do you know that?——I _____in a meeting. I’m sorry.
#102311
A
had been
B
was
C
am
D
have been