It’snotgoodforusintheplaygroun

It’s not good for us ___________ in the playground ___________ hazy (雾霾) mornings.

A．exercising ; in	B．to exercise; in
C．to take exercises; on	D．to do exercise; on

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相关试题

Please don't stand up in class until you .

A．were told to

B．are told to

C．were told

D．are told

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– Can a plane fly _______ the Atlantic Ocean?
--Yes, but it needs to go _______ the clouds for hours.

A．across, through	B．through, across
C．across, across	D．through, through

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The man is very ill and he has _______.

A．operate on

B．to be operated on

C．to operate

D．being operated on

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They are _______ little sheep that we can’t make much money by selling _______.

A．so, it

B．such, it

C．so, them

D．such; them

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______ of the people here live on rice，and the people there live _______ on noodles

A．Mostly；most

B．Most；mostly

C．Mostly；mostly

D．Most; most

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