Expertsaretryingtoworkoutaplan

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Experts are trying to work out a plan to deal with the problems caused by global warming ______ it is too late.

A．when

B．if

C．before

D．until

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Little children ask endless questions because they are ______ about everything.

A．skeptical	B．aware
C．capable	D．curious

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--Jack fell off the ladder yesterday, but he is all right now.
--What a lucky dog! He ______ himself badly.

A．should injure	B． could have injured
C．should have injured	D．might injure

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It has been announced that the award will be given to ______ has made the largest donation to charity this year.

A．anyone	B．the one
C．whomever	D．whoever

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Many people agree that there has never been a more splendid opening ceremony than ______ of the Beijing Olympic Games in history.

A．one

B．what

C．that

D．it

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--Has Billy finished his homework today?
--I have no idea. He ______ it this morning.

A．would do

B．was doing

C．has done

D．had done

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