问题
The children planted more trees and flowersafter they______Greener China.
A:joined
B:took part in
C:became
D:were
B:took part in
C:became
D:were
正确答案是：
同类题型
Howlong has the United Nations ________— ______1945.
The bus kept the people ______for twentyminutes.
I left Jack__________the suitcase while Iwent to get the tickets.
The medicine works more effectively you drink some hot water after taking it
It was only _____ I read the poem ______ Ibegan to appreciate its beauty