问题
选择题
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
答案：C
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。