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【单选题】

I don't think students should be allowed _____ homework with friends. They talk instead of _____ homework.

[ ]

A.
to do; do
B.
to do; doing
C.
do; do
D.
do; doing
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举一反三

【单选题】We have two rooms_________, but I can't decide_________. [ ]

A.
to live; to choose which one
B.
lived ; choose which one
C.
to livein ; which one to choose
D.
live ; whichone