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D.should 2.What is the best way you can imagine ________ the overuse of water in our school A.reduced
B.reducing C.reduce
D.to reduce 3. _____ it many times, I still can’t make Tom understand what I said. A.Explained
B.Having explained C.To explain
D.Having been explained 4.No one ____ be more warm-hearted; he has a heart of gold. A.should B.can C.might
D.need 5.One of the meteor (陨石) pieces was found to have crashed into a frozen lake, __
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