31我国社会主义初级阶段的主要矛盾是()

2. What is this noise? Tell me what ( ) here.

1. Health experts in many countries still ( ) their ideas about the relationships between our food and our health.

2. The first zoological garden in the United States ( ) in Philadelphia in 1874.( )

1. John was finishing his assignments when his father ( ) home from work.

4. "How does Alma like her new work?""She ( ) with the hours."

3. Jean could be a very attractive girl but she ( ) to her clothes.

2. "I＇m leaving now. ""Make sure ( ) the door."

1. It is an accepted custom in our country for men to remove their hats when a woman ( ) the room.

5.( ) I haven＇t seen the film, I know very little about it.

4.The research results show that the earth goes a little faster ( ) it is closer to the sun.