题目内容
18．The medicine _______ in a dry and cool place．（ ）| A． | must kept | B． | must keep | C． | must be kept | D． | must be keep |
分析 药品必须被保存在干燥低温的地方．
解答 答案：C．
根据The medicine _______ in a dry and cool place，可知药品必须被保存在干燥低温的地方，句子中medicine和keep之间是被动关系，这里含有情态动词must，所以应该是含有情态动词的被动语态，由must be+动词的过去分词构成．故选C．
点评 本题考查了情态动词的用法．解答时注意句意以及所给选项的意思并作出正确选择．
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| Country walk | Join us in a 15-kilometer country walk on Sunday，April 18th．Meet at the scgool gate at 2：30 in the afternoon．Strong shoes preferred．Call Jack at 2015689 if you want to know more |
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| Good home wanted | Three pet cats and eight lovely pet dogs need good homes They are the loveliest．Come and see them，and you'll like them． Free to the right person Come to 437 Zhongshan Road or call Liu Qian at 8920753 |
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A．not go to school B．take your camera C．wear strong shoes D．wear warm clothes
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B．Because she has a strong wish to go to the concert．
C．Because her friends will go to the concert．
D．Because she wants to spend all her pocket money．