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参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】You should ___ the lights if there is no one in the room.
A.
turn out
B.
turn off
C.
go back
D.
go on
【单选题】Soyouareback.Jennyhascometoyourofficeseveraltimesthismorning,asif_______somethingimportant.[ ]
A.
tolookfor
B.
lookingfor
C.
lookedfor
D.
haslookedfor
【单选题】．______ just two hours’ ride from Changsha, the small town is a paradise for tourists.
A.
Locating
B.
Having located
C.
Located
D.
Being located
【单选题】When you cross the street, you can never be _______ careful.
A.
too
B.
very
C.
much
D.
so
【单选题】.Despite UNICEF’s efforts, dirty water ______ for disease spreading in southern Iraq at the very moment.
A.
is to be blamed
B.
is being blamed
C.
has been blamed
D.
was blamed
【单选题】—Robert is indeed a wise man.—Oh, yes. How often I have regretted his advice![ ]
A.
to take
B.
taking
C.
not to take
D.
not taking
【单选题】My daughter bought me six novels in English from England, most ofwere the best-sellers of 2013.
A.
whom
B.
what
C.
them
D.
which
【单选题】— Great changes have taken place in Putian City .I can hardly recognize it . —-You are right .It is no longer ______ it used to be ten years ago .
A.
than
B.
that
C.
as
D.
what
【单选题】Last night, before the exam, I went over the lessons_______I couldn’t keep my eyes open to stay awake any longer．
A.
before
B.
until
C.
unless
D.
when