—What do you think made the girl so glad?

—_____a beautiful necklace.

 After the meeting, she invited us to dinner at her home and treated us _____ many exotic foods we _____ before. It was really a wonderful treat.

Farmers in China began to use tractors ___ cattle for farming work.

Mr. Wang ____ two boys to send the sick boy to the nearest hospital

—Are you a volunteer now?

—No, but I _____. I worked for the City Sports Meeting last year.

The girl looked at me with a _______expression. Maybe the problem was quite ______.

A quarrel _________, which made him ______ his family.

Our class _______ of thirty-two boys and twenty-three girls.

Now a lot of new technologies can ______  problems in industry.

 When I returned home ,I found the window _____and something____.