—Does Liu Hui serve in the army?
—No, but he ________ in the army for three years.
A. served B. has served C. is serving D. would serve
—Does Liu Hui serve in the army?
—No, but he ________ in the army for three years.
A. served B. has served C. is serving D. would serve
A
由no是对前句的否定可知现在不在部队服役,是以前“服过役”,故用一般过去时。