阅读下面五个句子，然后用下面方框中所给的单词或短语填空，使每个句子在结构、句意和逻辑上正确。(提示:选项中有一个是多余的)
in time / on time / set up / help / thinking / trouble
【小题1】They __________ a call-in center for parents.
【小题2】What did they ask you to __________ out with?
【小题3】The bus driver, stopped the bus without __________ twice.
【小题4】People often do not help others because they do not want to get into __________.
【小题5】Thanks to Mr. Wang and the passengers, the man was saved by doctors __________.