If the firefighters ________ in time, the fire would have resulted in many deaths in the hotel.
A．wouldn’t have arrivedB．hadn’t arrived
C．didn’t arriveD．shouldn’t arrive
B
考查虛擬語氣。這是一個與過去事實相反的虛擬語氣。條件從句中用過去時，主句里用情態(tài)動詞+have done;
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