1.popular music is well__D___ by most young people
A thought about B thought over
C thought out D thought of
2.ALL possible means____ been taken to stop the river___
A have .polluting
B has .polluted
C has, from polluted
D have,being polluted
3.whom would you rather___ with your younger sister?
A have gone
B have to go
C have go
D have going
详细分析，谢谢
