问题
选择题
All lights______after the students left the classroom.
A.went down
B.goes off
C.goes down
D.went off
答案
答案:D
题目分析:go down表示停止,被接受,沉下,被打败的意思,而go off表示离开,消失,变差,熄火的意思,所有的灯都熄灭,所以将go down和went down,排除,又根据时间状语after the students left the classroom.可知答案为一般过去时,故选D
点评:本题考查的是动词词组的区别和识记