题目内容
-I think students should be allowed ______ homework with friends.
-I disagree. They talk instead of ______ homework.
-I disagree. They talk instead of ______ homework.
[ ]
A. do, doing
B. to do, to do
C. to do, doing
D. doing, to do
B. to do, to do
C. to do, doing
D. doing, to do
C
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