问题
选择题
The child _______ trees for the whole four hours with his parents. [ ]
A. plants
B. have been planting
C. has been planting
D. has been planted
答案
答案:C
The child _______ trees for the whole four hours with his parents. [ ]
A. plants
B. have been planting
C. has been planting
D. has been planted
答案:C