问题
选择题
The children planted more trees after they ________Greener China. [ ]
A. joined
B. took part in
C. became
D. were
答案
A
搜题请搜索小程序“爱下问搜题”
The children planted more trees after they ________Greener China. [ ]
A. joined
B. took part in
C. became
D. were
A