I/

1. The problem is too difficult for him to solve.

2. I wish our teacher was here at the moment.

3. John used to smoke cigarettes when he was a young man.

4. This is the first time I have eaten this kind of food

5. Mount Everest is the highest mountain in the world.

II/

1. We bought some trees that our neighbor told us were on sale.

2. Unless you are hurry, you will miss the last bus.

3. People respected him because he was a honest man.

4. Both Jane and her sister are quite warm and friendly.

5. .....

1. The problem is too difficult for him to solve.

2. I wish our teacher was here at the moment.

3. John used to smoke cigarettes when he was a young man.

4. This is the first time I have eaten this kind of food

5. Mount Everest is the highest mountain in the world.

II/

1. We bought some trees that our neighbor told us were on sale.

2. Unless you are hurry, you will miss the last bus.

3. People respected him because he was a honest man.

4. Both Jane and her sister are quite warm and friendly.

5. I did't have a chance to thank him before he has gone