填空题

We must keep ourselves（）(health) so that we can study well.

【参考答案】

healthy

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热门试题

填空题

（）(use) economically, one tin of oil will last at least two months.

单项选择题

A．Saying good-bye to a friend.
B．Buying tickets for a sports event.
C．Paying a bill at a friend.
D．Arranging a plane trip.