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【单选题】
Tom _____ in the library every night over the last three months.
[ ]
A.
works
B.
worked
C.
has been working
D.
had been working
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参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】—Please tell me ________ for the meeting yesterday．—Sorry．The traffic was bad．
A.
why you came late
B.
why did you come late
C.
when you came late
D.
when did you come late
【单选题】I kept looking at the man, wondering _______.
A.
whether I have seen him before
B.
whether I had seen him before
C.
that I had seen him before
D.
when I saw him before
【单选题】．A look at recent trends in world fisheries reveals ________ the ocean on a global scale.
A.
how we have swiftly affected
B.
that how swiftly we have affected
C.
how swiftly we have affected
D.
however swiftly we have affected