问题
选择题
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
答案
答案：B
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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
答案：B