问题

If we _______ now to protect the environment, we’ll live to regret it.

A:hadn't acted
B:haven't acted
C:don't act
D:won't act;

正确答案是：

同类题型

What do you think of the English course for the kids? —Great! I have decided to ______ my son in the course.[ ]

下列各项中，没有语病的一项是

_________timedid we have that we must hurry up.

Are you Bob ___________. I’m Mark.

Allan looks tired out —SureHe in the gym for two hours