isknowntousallisthatweshoulddo

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_____is known to us all is that we should do as much as we can ______ stop the pollution of the environment.

A．It; help

B．What; to help

C．As ; to help

D．That ; help

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The king is said to _______ by the spider weaving its web in the cave where he was hiding and defeated his enemy at last.

A．be encouraged

B．being encouraged

C．have been encouraged

D．have encouraged

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To our surprise, the painting considered _______ should have won the prize.

A．being copied

B．having been copied

C．to have copied

D．to have been copied

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Limited natural resources should be made full use of _______ the _______ need of energy.

A．meeting; increasing

B．to meet; increased

C．meeting; increased

D．to meet; increasing

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We’re leaving at six o’clock, and hope _______ most of the journey by lunch time.

A．to do	B．to have done
C．to make	D．to have made

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—Henry doesn’t seem to be what he was.
—No. so many terrible things in the war has made him more thoughtful.

A．Seen	B．His having seen
C．Having seen	D．To have seen

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