题目内容
He ________ two thousand trees since 1990.
[ ]
A.plants
B.planted
C.will plant
D.has planted
答案:D
解析:
解析:
|
since“自从”,多用于完成时句型中. |
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题目内容
He ________ two thousand trees since 1990.
[ ]
|
since“自从”,多用于完成时句型中. |