It has been announced that candidates remain in their seats until all the
题型：不详难度：来源：
| It has been announced that candidates remain in their seats until all the papers have been collected. |
答案
| B |
解析
| 考查情态动词的用法：shall用于规定，警告，命令，句意是：已经宣布了，考生在试卷收完前要坐在座位上。。选B。 |
举一反三
— Do you think our basketball team played very well yesterday?
— ．| A．They were not nervous at all | | B．They were still young | | C．They played naturally | | D．They couldn’t have done better |
|
—What does the sign over there read?
—"No person smoke or carry a lighted cigarette, cigar or pipe in this area．" |
—How did your mathematics exam go？
—I thought I ，but in fact I fell behind in the class.| A．should have been the top 10 | B．could have been the top 10 | | C．may have been the top 10 | D．need have been the top 10 |
|
Aunt Mary is crazy about shopping. She must be snapping up the bargains in the department store during such a sale, ______?| A．mustn’t she? | B．isn’t she | C．needn’t she | D．doesn’t she |
|
Remember to pack more winter clothes into your suitcase. The winter in Chicago __________ be extremely cold.| A．must | B．will | C．can | D．shall |
|
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