题目内容：

 

1.The laptop on the teacher’s desk is not yours. It b_____ to Harry.

2.While shopping, we always b______ with the shopkeeper in order to reduce the price.

3.The children waited until the policeman s_________ to them to cross the street.

4.I don’t know how to choose a mobile phone. Science and t________ is changing so fast!

5.I really a________________ it that you helped me so much when I was in need.

6.When people found the missing boy in the forest, they all smiled in r__________.

7.On hearing the funny story, the whole class burst into l___________________.

8.To be h______________, to start a business of my own is not as easy as I expected.

9.When I opened the letter, I found some photos a__________________ it.

10.The p_____ we saw last night was really wonderful. It was worth my time and effort.