Wecanneverexpectbluerskyunless

We can never expect ________ bluer sky unless we create________ less polluted world.

A．a; a	B．a; the
C．the; a	D．the; the

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–---I’ve decided to spend the summer holidays traveling in Australia.
----Oh, ________!

A．if only I could go with you	B．what a good news it is
C．how happily I was to hear that	D．what exciting to hear the news

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----________ was it ________ they discovered the entrance to the underground palace?
----Totally by chance.

A．How; that

B．What; that

C．What; when

D．Where; that

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The thief tried to break away from the policeman who _________ him but failed.

A．held

B．had held

C．would hold

D．was holding

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---–Why did you come so late for work?
-----I was ________ for 15 minutes on the way here in the traffic jam.

A．held up

B．put up

C．taken up

D．given up

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. Boris has brains. In fact, I doubt whether anyone in the class has _________ IQ.

A．a high

B．a higher

C．the higher

D．the highest

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