---- If he_____ , he ______ that food.              
---- Luckily he was sent to the hospital immediately.
A．was warned; would not takeB．had been warned; would not have taken
C．would be warned; had not takenD．would have been warned; had not taken
B
考查與過去事實相反的虛擬語氣，其構(gòu)成為if +主語+had done ,主句為would/could/might+ have done,根據(jù)句意如果他被警告的話，他就會不吃那種食物了。表示的是過去，所以選B。
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