问题
Stop killing this kind of birds! They _______. [ ]
A: are dying out
B:AIDU_
C: have died out
D: have died off
B:AIDU_
C: have died out
D: have died off
正确答案是：
同类题型
The speech by the mayor of Shanghai before the final EXPO 2010 is strongly impressed ____ my memory
The Voice of China became one of ________ TV ______ last year.
Our city looks more beautiful!-Yes. Lots of trees and grass ______ since last year.
Is Jack on duty today? — It ____ be him; it’s his turn tomorrow. [ ]