问题
选择题
If you want to borrow a football after school, your student ____ here.
A．has to leave
B．mustleave
C．has to be left
D．mustbe left
答案
答案：C
句意：如果你想放学后借一只足球，你的学生必须被留在这。have to 客观上不得不，根据语境应选C。
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