—DavidhasgonetoAustraliaonbusi

-—David has gone to Australia on business.
—Really? I ______ why he was absent from today’s meeting.

A．am wondering

B．wonder

C．was wondering

D．had wondered

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It is surprising that Jack, who is only 39 years old, _______ in the field of engineering for 20 years when he entered the company last month.

A．worked

B．had worked

C．has worked

D．working

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. —Has the conference about building a water-power plant come to an end?
—No, it’s _______. Experts just disagree on some issues.

A．under discussion

B．under control

C．under consideration

D．under way

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—Mike, do you want Kobe Bryant shoes or James shoes?
—Daddy, _______ I choose? I like both pairs.

A．shall

B．must

C．can

D．may

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. Students are often reminded that chances _______ to the well-prepared.

A．belong	B．are belonged
C．are belonging	D．will be belonged

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—It’s a pity that Wang Qiang failed in the driving test again.
—How can you expect him to pass _______ he hasn’t been practicing enough?

A．when

B．once

C．unless

D．though

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