问题
______ school playgrounds to the public makes exercise easier for the people in the community.
A:Open;
B:Opened;
C:Opening;
D:Have opened;
B:Opened;
C:Opening;
D:Have opened;
正确答案是：
同类题型
Is Jack on duty today —It ______be him. It is his turn tomorrow.
Remember the first time we met?—SureYou _____________ the novel Gone With the Wind in the library
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You won’t go to Kathy’s wedding party, will you?— Yes, _________ invited