The doctor advised me to go on a diet because I weight during the last two months.A. put

问题补充：

The doctor advised me to go on a diet because I weight during the last two months.

A. put on

B. have put on

C. had put on

D. would put on

答案：

A. put on

B. have put on

(答案→)C. had put on

D. would put on

解析：考查时态。根据句意可知我发胖是在医生建议我节食之前。建议我节食用了过去时，那么发胖应该使用过去完成时。句意：医生建议我节食因为在过去的两个月里我发胖了。