______ the plan means we must start from the very beginning

foreign(外国) friends come to visit China every year.

Ellen was a painter of birds and of nature，________，for some reason，had withdrawn from all human society.(2012·浙江，17)

He was so kind that he was always ready to _______ money and clothes to those in the flooded areas.

_______ on earth is it _______ has eaten upall the leaves of these young trees in just one night