1. The boy can’t wear the shirt because it’s very tight.
--> The shirt is so tight that the boy can’t wear it.
-->The shirt is too tight for the boy to wear.
2. This problem is very difficult. He can’t solve it.
--> The problem is too difficult for him to solve.
--> It is such a diffucult problem that he can\'t solve it.
3. The man wasn\'t able to go on an expedition to the Middle East because of his age.
--> The man was too old to go on an expedition to the Middle East.
4. Hoa is very sick. She can’t sit up.
--> Hoa is so sick that she can\'t sit up.
5. It was very dark, so she couldn’t go out.
--> It was too dark for her to go out.
6. That car was too old for me to buy.
--> That car was so old that I can't buy.

7. The movie was so funny that we couldn’t stop laughing.
--> It was such a funny movie that we couldn\'t stop laughing.

8. No one could move the piano. It was very heavy.
--> The piano was too heavy for eveyone to move.

9. We shouldn’t swim in this river. The water isn’t clean.
--> This river isn’t clean so we shouldn\'t swim in this river.
10. John couldn’t get to sleep last night. He was worried about exam.
--> John was so worried about exam that he couldn't get to sleep at night.
11. It was a good book. I couldn’t put it down.
--> It was such a good book for me to put it down.
12. They were beautiful flowers. We took a photograph of them.
--> They were beautiful flowers so we took a photograph of them.
13. She speaks English well. You would think it was her native language.
--> She speaks English well so you would think it was her native language.
14. A taxi would have been best. But I didn’t have enough money.
--> I didn’t have enough money although a taxi would have been best.
15. All my guests will need chairs. But I haven’t got very many.
--> I didn’t have many chairs although all my guests need it.

1. The boy can’t wear the shirt because it’s very tight.
--> The shirt is so tight that the boy can’t wear it.
-->The shirt is too tight for the boy to wear.
2. This problem is very difficult. He can’t solve it.
--> The problem is too difficult for him to solve.
--> It is such a difficult problem that he can't solve it.
3. The man wasn't able to go on an expedition to the Middle East because of his age.
--> The man was too old to go on an expedition to the Middle East.
4. Hoa is very sick. She can’t sit up.
--> Hoa is so sick that she can't sit up.
5. It was very dark, so she couldn’t go out.
--> It was too dark for her to go out.
6. That car was too old for me to buy.
--> That car was so old that I can't buy it.
7. The movie was so funny that we couldn’t stop laughing.
--> It was such a funny movie that we couldn't stop laughing.
8. No one could move the piano. It was very heavy.
--> The piano was too heavy for everyone to move.
9. We shouldn’t swim in this river. The water isn’t clean.
--> This river isn’t clean so we shouldn't swim in this river.
10. John couldn’t get to sleep last night. He was worried about exam.
--> John was so worried about exam that he couldn't get to sleep at night.
11. It was a good book. I couldn’t put it down.
--> It was such a good book for me to put it down.
12. They were beautiful flowers. We took a photograph of them.
--> They were beautiful flowers so we took a photograph of them.
13. She speaks English well. You would think it was her native language.
--> She speaks English well so you would think it was her native language.
14. A taxi would have been best. But I didn’t have enough money.
--> I didn’t have enough money although a taxi would have been best.
15. All my guests will need chairs. But I haven’t got very many.
--> I didn’t have many chairs although all my guests need them.