29. On March 12, the students were planting trees ____ the classroom.
| A．in the back of | B．at the back of | C．to the back of | D．on the back of |
---Go for a picnic this weekend, OK?
--- ________. I love getting close to nature.
| A．I’m afraid | B．I couldn’t agree more |
| C．Have fun | D．I can’t follow you |
─Are you going to plant a great many trees in this area?
─Yes. The soil _________ away in this way.
| A．doesn’t wash | B．won’t wash | C．isn’t washed | D．won’t be washed |
It is known to all of us that lions ________ meat-eating animals.
| A．belonged to | B．are belonging to | C．are belonged to | D．belong to |
These plants are watered___________
| A．every other day | B．every other days |
| C．each two days | D．every two day |
Many kinds of help ________ by plane or by train to the area ever since the earthquake hit it.
| A．had been offered | B．have been offered |
| C．are offered | D．were offered |