问题
选择题
Alice, bent ______ losing weight, increased the time of exercise to three hours______ a time.[ ]
A. on; in
B. on; for
C. with; for
D. with; at
答案
答案：B
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Alice, bent ______ losing weight, increased the time of exercise to three hours______ a time.[ ]
A. on; in
B. on; for
C. with; for
D. with; at
答案：B