-How long can I keep this book?-It must ___ (return) by Wednesday.
问题描述:
-How long can I keep this book?-It must ___ (return) by Wednesday.
答
你好楼主,
值此中秋佳节,我衷心祝你快乐.
此处应该填 be returned
因为是被动语态的啦
还有问题可以问我~~~