用适当的介词填空
1.Doctors and nurses care the sick.
2.Our goods are the best on the market; in other words, our goods are second none.
3.Every night after dinner, the childs grandmother tells story story to him patiently.
4.He started to study the plants in Africa 10 years ago and decided to devote his whole life them.
5.Mary knows children well. After all, she has brought up six her own.
【答案】1.for 2.to 3.after 4.to 5.of