I really ought to go on a diet.I on so much weight since I gave up jogging. A. p

I really ought to go on a diet。I ________ on so much weight since I gave up jogging.

A. put          B. am putting    C. have put      D. had put

试题答案

C

解析:

因为与表示“自…以来”的since从句或短语连用的通常是现在完成时态；再说前面的“我应当节食了”，也说明现在“我已经增肥”了。