many schools ——since 1949 A.have been opened B.have opened 选哪个,要理由
问题描述:
many schools ——since 1949 A.have been opened B.have opened 选哪个,要理由
答
我也认为have been open 是对的.
many schools ——since 1949 A.have been opened B.have opened 选哪个,要理由
我也认为have been open 是对的.