Food safety is important. Rules to stop people from food pollution.A．must
题型：不详难度：来源：
Food safety is important. Rules to stop people from food pollution.| A．must make | B．must be made | C．can’t make | D．can’t be made |
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答案
| B |
解析
| 考查含有情态动词的被动语态的基本构成，情态动词+be+过去分词，句意：食品安全是重要的，必须制定规则使人们远离食品污染。Rule和make是被动关系，用must be made，选B。 |
举一反三
—Look! A book is on the floor. Whose is it?
—It ______be Rick"s. It has his name on it.| A．mustn"t | B．can"t | C．must | D．need |
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| This toy Mickey Mouse _______be Amy"s. she"s the only kid at the picnic. |
With the help of the new technology, you __ e-mail your friends by mobile phone.| A．can | B．must | C．need | D．should |
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-- _____ I ask you a question, Mr. Wang? -- Yes, you _______.| A．Can, can’t | B．Can, may | C．May, can | D．May, mustn’t |
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