It was heavy burden（負(fù)擔(dān)）for David _______ the whole family after he lost a job of a high salary.

A.raise B.raised C.to raise D.raises

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Today there are more fires than in the past. Over 100,000 wildfires burn each year in America. Russia has 20,000 to 35,000 wildfires every year. Australia has on average 60,000 each year. These fires destroy huge areas of forests and burn hundreds of homes.

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