lie in后面加什么

　　Salvation may lie in tourism.

　　旅游業(yè)也許是挽救的途徑。

　　The answer to that may lie in Britain.

　　問題的答案可能取決于英國。

　　I had to lie in bed for at least two weeks.

　　我不得不在床上躺至少兩周。