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
考查固定短语。Be bent on热恋于;for a time暂时，一度；at a time一次。.句意：热恋于减肥的Alice,一度把锻炼的时间增加到三个小时。