题目内容
【题目】During the Second World War, once before, the U-boats had been _____ because of air attack.
in trouble
in the trouble
for trouble
within trouble
【答案】A
【解析】in trouble表示“出于困境，出于险境”，是固定搭配。句意：在第二次世界大战中，潜艇曾因空袭一度陷入险境。
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题目内容
【题目】During the Second World War, once before, the U-boats had been _____ because of air attack.
in trouble
in the trouble
for trouble
within trouble
【答案】A
【解析】in trouble表示“出于困境，出于险境”，是固定搭配。句意：在第二次世界大战中，潜艇曾因空袭一度陷入险境。