I often do exercise ______ the morning, but ______ Sunday morning I watch TV. [ ]A. in; on B. on; in
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题目简介
I often do exercise ______ the morning, but ______ Sunday morning I watch TV. [ ]A. in; on B. on; in
题目详情
[ ]
B. on; in
C. in; at
D. on; at
答案