75.　 负责行李的那个人在每件行李上都贴上了一个标签。

The man in ____________ of the luggage ____________ a label to each piece.

74.　 因为不习惯城市的生活，老人又回到了农村。

____________ ____________ ____________ to the life in the city, the old man came back to the countryside.

73.　 他所说的话未必意味着现在的工作就是他最喜欢的。

____________ he said does not ____________ mean that the present job is his ____________.

72.　 这种药物尚未进行过人体试验，所以还不能投放到市场。

This drug has not been ____________ ____________ on humans yet, so it cannot be put on the market.

71.　 夏天长时间暴露在阳光下是有害的。

It’s ____________ to be ____________ to the sun for a long time in summer.