Remember to do this in time of H1N1 ---         constantly the windows to let fresh air enter and move around inside, and avoiding the access to the crowds, a necessity everyday. 
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A
open
B
we open
C
opening;
D
to open
推荐题目
This is really an exciting match. _______ the game?
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A
Who do you think will win
B
Whom do you think will win
C
Do you think who will win
D
Do you think whom will win
 I’ve been fortunate to find a career that I love and, _____, I get well paid for it.
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A
what’s more
B
as a result
C
for example
D
in conclusion