It’s good for health to sleep with the windows _______ in hot summer.
#49873
A
close
B
opened
C
closing
D
open
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----Where is Tom now, Millie?----I saw him _______ in the street a moment ago and I told him _________.
#48934
A
playing; don’t do so
B
playing; not to do so
C
play; to do so
D
play; don’t do so
The new exchange students don’t seem        who        for help.
#49050
A
know, to turn
B
know, to turn to
C
to know, to turn to
D
to know, to turn
We should set up some shelters _____the homeless people. 
#48569
A
help
B
helping
C
helped
D
to help