Once_____in the forest, you ought to remain__   you are waiting for help．
A．being lost; whereB．losing; where
C．lost; thereD．lost; where
D
這題考查狀語(yǔ)從句的省略式，once lost="once" you are lost，第二空考查表語(yǔ)從句，remain是連系動(dòng)詞，后面接表語(yǔ)從句，表語(yǔ)從句中缺地點(diǎn)狀語(yǔ)。選D.句意是：一旦你在樹林里迷路了，你應(yīng)該呆在原來(lái)的地方等著幫助。
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