问题

This nationwide smog should serve as a reminder to all, indicating a high time that we ______ on what we’ve done to the environment.

A:have reflected
B:are reflecting
C:will reflect
D:reflected

正确答案是：

同类题型

I’m so _________ to all those volunteers because they helped my terrible day end happily.

Sally ______ boating on Green Lake last weekend and had great fun.

一 Did you watch the fashion show on TV last night一I wanted to, but my mother her favorite TV programme.

Hurry up! The train ______. You know it ______ at 8:30 am.

int is not who said the words, _____they are true or not