Sometimes smiles around the world ______ be false, hiding other feelings like an
题型：不详难度：来源：
Sometimes smiles around the world ______ be false, hiding other feelings like anger, fear or worry.| A．must | B．would | C．should | D．can |
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答案
| D |
解析
试题分析：考查情态动词：本句意思为：世间有些笑容可能是虚假的，掩盖了其他的感情，像生气、恐惧和担心。这里用can表示有客观的可能性，A. must必须，B. would会，C. should应该，选D。 |
举一反三
---- It’s the office! So you _____ know eating is not allowed here.
---- Oh, sorry.| A．must | B．will | C． may | D． need |
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| The school rules state that no child ___ be allowed out of the school during the day , unless accompanied by an adult . |
| Cars, buses and bikes ________ stop when the traffic lights turn red. |
One of the National Health Regulations is that public schools ______ actively create conditions for sports facilities opened to the public.| A．shall | B．will | C．might | D．could |
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No student ______ go out of the school campus after 10:00 at night without permission according to the school regulations.| A．shall | B．must | C．would | D．should |
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