－－－－ If he_____ he ______ that food.－－－－ Luckily he was sent to the hospital immediately.A．was war
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| ---- If he_____ , he ______ that food. ---- Luckily he was sent to the hospital immediately.
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B考查与过去事实相反的虚拟语气，其构成为if +主语+had done ,主句为would/could/might+ have done,根据句意如果他被警告的话，他就会不吃那种食物了。表示的是过去，所以选B。