These days she ___ on a diet.She only eats two meals a day.

问题描述:

These days she ___ on a diet.She only eats two meals a day.
[A]was going [B]has gone [C} went [D] is going
同时说明原因

选D,这些天她一直在节食,这里节食是个持续的动作,所以用进行时;后一句eats表明是一般时.