．Nowadaysmeteorologistscanmake

．Nowadays meteorologists can make good forecast for 3 or 5 days ．Perhaps soon they may be able to do that for a week or ____．

A．more behind

B．more ahead

C．less behind

D．less ahead

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C．effort

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A．excuse

B．explain

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I'm sorry. I _____________ you__________ to me.

A．don't know; are speaking	B．don't know ;were speaking
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--I am tired. I__________ the living-room all day.

A．painted	B．have been painting
C．had painted	D．have painted

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A．lines

B．instructions

C．words

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