题目内容

Once environment damage _____, it takes many years for the system to recover.
A．has doneB．is to doC．doesD．is done
D
略
练习册系列答案
相关题目

30.—Why did you leave the lights burning?
—Heavens! I guess I__________to turn them off.
A．would forgetB．had forgotC．forgotD．have forgot

22．How close parents are to their children ___________a great effect on the characters of the children.
A．haveB．to haveC．havingD．Has
When a person wants to operate the computer, _____ read instructions first.
A．you will have toB．one must
C．they will have toD．he has to
Man _____ profit, sometimes even being unaware of the harm he has done to the environment.
A．is always pursuingB．was always pursuing
C．had always pursuedD．had always been pursuing
Active reading will result in a better understanding of what _____.
A．is being readB．to be readC．to readD．being read
The chairman told the speaker that she _____ to speak a little louder so as to make herself _____.
A．was expected; heardB．had expected; hear
C．had hoped; hearD．was hoped; heard
I thought Jim would say something about his school report, but he _____ it.
A．doesn’t mentionB．hadn’t mentioned
C．didn’t mentionD．hasn’t mentioned

17. — I’m sorry. I ____ hurt you.
— Forget it.
A．haven’t meant toB．am not meant toC．didn’t mean toD．never mean to

违法和不良信息举报电话：027-86699610 举报邮箱：58377363@163.com

精英家教网