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外语
I cannot find Tom anywhere.He ______have been off long. I heard him make a call just now.
I cannot find Tom anywhere.He ______have been off long. I heard him make a call just now.
admin
2015-03-17
53
问题
I cannot find Tom anywhere.He ______have been off long. I heard him make a call just now.
选项
A、shouldn’t
B、can’t
C、mustn’t
D、needn’t
答案
B
解析
语境表示语气很肯定的否定判断推测:我刚才还听见他打电话了,因此他一定没走多远。用can’t have done。shouldn’t have done表示本不应该做某事;mustn’t have done表示禁止做某事;而needn’t have done指的是本来没必要做某事。
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大学英语三级A级题库大学英语三级分类
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大学英语三级
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