theyhavebeenworkinghardtofind?

______they have been working hard to find?

A．Is that what

B．Is that

C．It is that

D．Is it that

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相关试题

During the tourist season, there are many people wandering in this city to see the old
castles _____ in the sixteenth century.

A．to be built	B．being built
C．having been built	D．built

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_______ which way to take, the little boy behaved like a real gentleman who comforted his
sister from time to time.

A．Leaving to wonder	B．Having left to wonder
C．Left wondering	D．Left to wonder

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He doesn't know what to say, for it is the first time that he ______ with a girl.

A．went out

B．goes out

C．has gone out

D．had gone out

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There were many more people who got injured in the big fire than _______.

A．was reported	B．it was reported
C．were reported	D．they were reported

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This robot is supposed to save a lot of labor, but it remains a problem if it ______.

A．is

B．saves

C．does

D．has

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