As everyone knows, rubbish everywhere.A. need be thrown B. mustn’
题型：不详难度：来源：
As everyone knows, rubbish everywhere.
A. need be thrown
B. mustn’t be thrown
C. can’t throw |
答案
| B |
解析
| 考察情态动词用法。Mustn’t禁止，千万不能；根据句意可知B正确。句意：正如大家所知，千万不能随处乱扔垃圾。 |
举一反三
—Shall I inform him of the change of the schedule right now?
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