ourearth,orelseitwillbenolonge

__________ our earth, or else it will be no longer fit for us to live on.

A．Protecting

B．To protect

C．Protect

D．Protected

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相关试题

To make members of a team perform better, the trainer first of all has to know their ______ and weaknesses.

A．strengths

B．benefits

C．techniques

D．values

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Jack would like to go to the cinema with dad, but the film is ______ for adults only.

A．admitted

B．promised

C．intended

D．permitted

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He made up his mind to devote his life ______ the river ______ polluted.

A．to prevent; to be	B．to prevent; from being
C．to preventing; to be	D．to preventing; from being

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---Are you firmly against any independence move by Taiwan?
---Of course. That’s ______ our basic interest lies.

A．why

B．when

C．where

D．in which

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______ on a true story, the film is well worth ______ .

A．Based; seeing

B．Basing; seeing

C．To base; to see

D．Based; to be seen

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