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16．Something terrible _________ if he didn't come to the bar as he always did．（　　）
A．should happenB．might happen
C．must have happenedD．can have happened

分析 如果他沒有像他總是的那樣來酒吧，那么可定是有糟糕的事情發(fā)生了．

解答 答案：C
解析：A：應該發(fā)生；B：可能發(fā)生；C：一定是做過某事；D：有可能做過某事．根據(jù)后面的"如果他沒有像他總是的那樣來酒吧"可知糟糕的事情"一定"發(fā)生了，故結合所給選項分析可知本題答案為C選項；其余選項均不符合題意．

點評 本題考查情態(tài)動詞，做此類題目時一定要先分析各個選項的含義及其用法再結合句意選出正確答案．

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