"They didn’t take measures in time, otherwise the explosions ____．"some experts said．
A．wouldn’t happenB．didn’t happen
C．wouldn’t have happenedD．mustn’t have happened
C
此題考查虛擬語(yǔ)氣。由otherwise引導(dǎo)的含蓄條件句的虛擬語(yǔ)氣，根據(jù)語(yǔ)境是與過(guò)去事實(shí)相反，其主句的構(gòu)成為：would/could/might have done,所以選C,句意：一些專(zhuān)家說(shuō)：“他們沒(méi)有及時(shí)采取措施，不然的話爆炸就不會(huì)發(fā)生了�！�
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