I’msorrythatIcan’thelptreesbec

I’m sorry that I can’t help _____ trees because I am busy with the homework.

A．to plant

B．planting

C．planted

D．plants

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“Things________never come again！” I couldn’t help talking to myself.

A．lost	B．losing
C．to lose	D．have lost

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Every one of us must know：________we live can we save the earth.

A．by changing the way only

B．only by changing the way

C．by only changing the way

D．by changing only the way

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—Can those________at the back of the classroom hear me?
—No problem.

A．seat	B．sit
C．seated	D．sat

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Attracting _____ senior citizens, Florida is _____ home to the largest population of elder Americans.

A．不填; 不填

B．the; the

C．the; 不填

D．不填; a

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—Bob feels really sorry, Jean.
— ______ I wouldn’t accept his excuses unless he takes back what he said.

A．What for?

B．So what?

C．No doubt.

D．No wonder.

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