问题
选择题
______ morning exercises is good ______ us. [ ]
A. Doing, at
B. Doing, for
C. Do, at
D. Do, for
答案
答案:B
______ morning exercises is good ______ us. [ ]
A. Doing, at
B. Doing, for
C. Do, at
D. Do, for
答案:B