问题补充:
an hour in the morning and you will be looking for it during the rest of the day.
A. Losing
B. To lose
C. Lose
D. Lost
答案:
A. Losing
B. To lose
(答案→)C. Lose
D. Lost
解析:考查固定句型。祈使句+连词+陈述句=条件句,主句。本句=If you lose an hour in the morning, you will be looking for it during the rest of the day.