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【单选题】

There is still a ___________ doubt among them as to the practical value of the building.
[ ]

A.
specific
B.
sure
C.
some
D.
certain
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参考答案:
参考解析:
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举一反三

【单选题】Please________my suitcase while I go to buy the ticket.[ ]

A.
set eyes on
B.
open your eyes to
C.
keep an eye on
D.
have an eye for

【单选题】In order to pass the examination, ______. [ ]

A.
Mary stopped playing computer gaines
B.
Mary's father bought her a lot of books
C.
a lot of books were bought by Mary' father
D.
Mary' teacher helped her with her lessons