"They didn’t take measures in time, otherwise the explosions ____."some experts said.


  1. A.
    wouldn’t happen
  2. B.
    didn’t happen
  3. C.
    wouldn’t have happened
  4. D.
    mustn’t have happened
C
此題考查虛擬語氣。由otherwise引導(dǎo)的含蓄條件句的虛擬語氣,根據(jù)語境是與過去事實(shí)相反,其主句的構(gòu)成為:would/could/might have done,所以選C,句意:一些專家說:“他們沒有及時(shí)采取措施,不然的話爆炸就不會發(fā)生了。”
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