14. The book was so interesting that I read it twice.
→The book was
15. The essay is too long. He can’t finish it in 15 minutes.
→He doesn’t have
16. I know a few English words. I can’t read a newspaper in English.
→I don’t know
17. The children couldn’t go skiing because the sea was very rough.
→The sea was
18. She couldn’t do this math exercise because it’s extremely difficult.
→This math exercise is
14. The book was so interesting that I read it twice.
→The book was interesting enough for me to read it twice.
15. The essay is too long. He can’t finish it in 15 minutes.
→He doesn’t have enough time to finish the essay
16. I know a few English words. I can’t read a newspaper in English.
→I don’t know enough English words to read a newspaper in English.
17. The children couldn’t go skiing because the sea was very rough.
→The sea was not clean enough for the children to go skiing
18. She couldn’t do this math exercise because it’s extremely difficult.
→This math exercise is not easy enough for her to do