题目内容
. One third of the area ______ covered with trees. About seventy percent of the trees ______ been planted recently.
A. is; has B. is; have C. are; have D. are; has
B
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题目内容
. One third of the area ______ covered with trees. About seventy percent of the trees ______ been planted recently.
A. is; has B. is; have C. are; have D. are; has
B