句子：
______ ________(面临) a difficult situation, Tom decided to ask his boss for advice.
He became famous _______ _________ _________.(40多岁)
People in Chongqing are proud of _______ _______ ________ ________ (所取得的成就)in the past ten years.
we can give money to _______ ______ _______ ________ ______ (使饮水安全).
Always leave things ________ _______ ________ _______ ________ _________.(你能再找到它们的地方)