单项选择题

The school rule states that no child shall be, unless（）by an adult, allowed out of the school during the day.

A.was accompanied
B.accompanying
C.accompanied
D.being accompanied

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单项选择题

Stephen Hawking believes that the earth is unlikely to be the only planet（）life has developed gradually.

A.that
B.where
C.which
D.whose

单项选择题

The food that you bought yesterday should be eaten （）．It may go bad if you don’t．

A.as fast as possible
B.as quickly as you can
C.as soon as possible
D.so soon as you can