题目内容

根据所给单词的适当形式填空。

1．Things went from bad to worse. The longer people waited for help，the ___the situation became．(danger)

2．A large amount of research ________ to understand sleep recently ．(do)

3．The old dresser needs ____ again．(paint)．

4．He has some problems _____ up the plan．(make)

5．Teenagers should ____ to choose their own friends．(allow)

1．more dangerous  2．has been done  3．painting／to be painted  4．making   5．be allowed

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完形填空。阅读下面的短文，根据上下文意义和所给单词首字母，写出标有题号每小题空白处适当单词完全、正确形式。
      If you travel by a  1   across the center of Africa or South America, you fly over forests for thousands
of kilometers. These great forests are the oceans of t  2  . There are thousands and thousands of kinds of
plants and a  3  .
      However, the world's forests are getting s  4   all the time. In many places, we're cutting down the trees
because we need wood and we need more farmland. Some people say that t  5   will not be any forest like
these in 30 years. What will happen if they d  6  ?
      If we cut down our forests, a lot of plants and animals will disappear from the w  7  . In a lot of places
the new farmland will soon look like the old desert. Crops will not grow there. It will not rain very often, and the
weather will get very hot. Perhaps the climate (气候) of the world will c  8  . This will be d  9   for
everyone in the world. That's w  10   we must take care of our forests.
1.                  2.                 3.                  4.                 5.                 
6.                  7.                 8.                  9.                10.              

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