1. It's difficult for Lan to have a trip abroad.

2. We are delighted that you are interested in protecting the environment.

3. We were worried that you wouldn't come back.

4. I am ashamed of having nothing better to offer you.

5. I'm afraid that she won't come tomorrow.

6. It is impossible for us to understand his theory.

7. I was surprised when I saw Paul at the party last night.

8. It's not easy for me to answer these questions.

9. We were delighted to get your letter yesterday.

10. Lan is so unhappy that she isn't going out tonight.

11. If people stop using dynamite fishing in the sea, creatures will be well preserverd.

12. His parents are happy because he gets a good job.

Xin ctlhn a

1. It is diffcult for Lan to have a trip to abroad.

2. We are delighted that you are interested in protecting the environment.

3. We are worried that you don't come back.

4. I am ashamed of having nothing better to offer you.

5.I am afraid that she won't come here tomorrow.

6. It is impossible for us to understand his theory.

7. I was surprised when I saw Paul at the party last night.

8. It's not easy for me to answer these questions.

9. We were delighted to get your letter yesterday.

10. Lan is so unhappy that she isn't going out tonight.

11. If people stop using dynamite fishing in the sea, creatures will be well preserved.

12. His parents are happy because he gets a good job.