They are cleaning up the______leaves on the road.()
A. fall
B. falling
C. fall
D. fallen
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Keep liquid(液体) away________your camera. ()
A. on
B. to
C. from
D. \
This problem should _______ later. ()
A. be talked about
B. be talking about
C. talk about
D. to talk about
We are looking forward _______ the summer holiday. ()
A. for
B. on
C. from
D. to
_______ nice bag ! But she spent only thirty dollars on it.()
A. What a
B. How a
C. What
D. How