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【单选题】
Bob would have helped us yesterday, but he_______
A.
was busy
B.
is busy
C.
had been busy.
D.
will be busy
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参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】Driving past the crossroads, I found a little girl ____ on the sidewalk crying. [ ]
A.
lying
B.
laying
C.
to lie
D.
to be lying
【单选题】To learn English well, we should find opportunities to hear English ______ as much as we can. [ ]
A.
speak
B.
speaking
C.
spoken
D.
to speak
【单选题】Without facts,we can't form a correct opinion, for we need to have actual knowledge___________ our thinking. [ ]
A.
which to be based
B.
which to base on
C.
on which to base
D.
where to base on
【单选题】After Tom had finished some paper work, he ______ interviewing the applicants.
A.
starts
B.
had started
C.
started
D.
has started
【单选题】________ is exciting news that she has received a doctor’s degree.
A.
What
B.
It
C.
This
D.
That
【单选题】Professor Li is the person to ____________ you should write.
A.
whom
B.
who
C.
which
D.
whose
【单选题】There are five pairs _______, but I’m at a loss which to choose.
A.
to be chosen
B.
to choose from
C.
to choose
D.
for choosing
【单选题】You____________ television．Why not do something more active?
A.
always watch
B.
are always watching
C.
have always watched
D.
have always been watching
【单选题】An advertisement is useful in it can persuade customers to but the kinds of goods in the shop.
A.
that
B.
which
C.
what
D.
whether