On rainy days, accidents ______ happen sometimes on steep roads．A．shouldB．shallC
题型：不详难度：来源：
On rainy days, accidents ______ happen sometimes on steep roads．| A．should | B．shall | C．must | D．can |
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答案
| D |
解析
| 考查情态动词。Should应该；shall将会；must必须；can能够，可能。在雨天，在陡峭的路上可能会发生事故。所以选D。 |
举一反三
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