单项选择题

Please tell us ______ .

A．when do they come
B．when will they come
C．when they will come

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单项选择题

Now summer has arrived, the days are getting ______ .

A．hot and longer
B．hotter and long
C．hotter and longer

单项选择题

I can't get on to the bus, because there is ______ on it.

A．not any rooms
B．no rooms
C．little room

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