10．I can’t buy this shirt. It’s too 　　　　　　　　　　(昂贵的) , I’m afraid.

9．Could you tell me when I have to 　　　　　　　　　(归还) the books to the library?

8．Do you brush your 　　　　　　(牙齿) before you go to bed every night?

7．An 　　　　　　　　(工程师) is going to give us a talk on robots.

6．Which animal is the strongest in the 　　　　　　　　(森林) ?

5．Be quiet! The baby is 　　　　　　　　　(睡着).

4．All the children were crying when they heard the 　　　　　　　(死亡) of their teacher.

3．　 　　　　　　　　(电脑) are wonderful machines. They can do a lot of things for people.

2．Doctors believe that 　　　　　　　　(抽烟) can make people suffer from lung (肺) cancer.

1．Tom’s father was very 　　　　　　　　(生病) . They had to take him to hospital.