Moreandmorepeoplehavecometorea

More and more people have come to realize that if we had taken effective measures much earlier, the air quality ______ so seriously now.

A．is not polluted	B．would not be polluted
C．had not been polluted	D．would not have been polluted

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相关试题

She was afraid __________ the dog in case it became dangerous.

A．of exciting	B．to excite
C．that she excited	D．to be exciting

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I__________ you somewhere before, but your name has escaped me_________.

A．must see;for a moment	B．must have seen; for a moment
C．must see;for the moment	D．must have seen; for the moment

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What worried the child most was _________ to visit his mother in the
hospital.

A．his not allowing	B．his not being allowed
C．his being not allowed	D．having not been allowed

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--How long ___________ each other before they__________ married?
--For about a year.

A．have they known;get

B．did they know; were going to get

C．do they know;are going to get

D．had they known; got

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—When__________ and visit our exhibition next month?
— When_______, I will let you know.

A．will he come; he will come

B．will he come; he comes

C．does he come; he will come

D．does he come; he comes

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