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------Could you please sweep the floor?------___________. I am busy looking after my sister.
#41457
A
Yes, sure
B
Sorry, I couldn’t
C
No problem
D
Sorry, I’m afraid not
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         we deal with our problems, we can easily become unhappy.
#35530
A
Until
B
Because
C
Unless
D
If
---______ are you staying in Beijing?----For a week.
#43652
A
How much
B
How long
C
How far
D
When
The paintings are on show in the history museum.
#43239
A
on time
B
on watch
C
on duty
D
on display
It is __________ difficult work __________ nobody can do it well．
#43277
A
such; that
B
such a; that
C
so; that
D
so a; tha
—Excuse me, Maria. Can I use your bike?—Sure. Here you are. But you must return it _____ time.
#38457
A
in
B
At
C
on
D
to