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【单选题】

My mother is busy _________the room.

A.
clean
B.
to clean
C.
cleaning
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【单选题】I really agree _____ what you have said. I think Miss Liu is very strict _____ her students. [ ]
A.
at, with
B.
to, with
C.
with, with
D.
on, at
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【单选题】—______ can you see a map?—On the wall.[ ]
A.
Where
B.
What
C.
Who
D.
Which
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【单选题】Something is wrong with my PDA.I will get it ___________ .A. repair
B.
repairing
C.
to repair
D.
repaired
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【单选题】_____, the rain stopped when we went out for a walk. [ ]
A.
Lucky
B.
Luck
C.
Luckily
D.
Luckless
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【单选题】Grandpa wants to watch the CCTV news. Please __________ The TV for him.[ ]
A.
add to
B.
mix up
C.
turn on
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【简答题】等差数列{an}中，an＞0，公差为d＞0，则有a4?a6＞a3?a7，类比上述性质，在等比数列{bn}中，若bn＞0，q＞1，写出b5，b7，b4，b8的一个不等关系______．
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【单选题】—Would you go to see the flower show with me this aftemoon? —I'm sorry. I'm busy and I _____ it twice. [ ]
A.
see
B.
saw
C.
have seen
D.
had seen
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【单选题】Mary used to________ to work, but now she gets used to__________ to work.
A.
ride a bike, taking a bus
B.
riding a bike, take a bus
C.
riding a bike, taking a bus
D.
ride a bike, take a bus
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【单选题】—Is Nancy knocking at the door?—No, it ________ be Nancy. She has gone to Guangzhou. [ ]
A.
can't
B.
mustn't
C.
won't
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【单选题】Thestudentsputupsomesigns________theriverside________thewaterclean.[ ]
A.
by,tokeep
B.
at,tokeep
C.
by,keep
D.
in,for
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