Exercise 6: Rewrite the sentences using "enough" instead of "too... to":

1. He is too old to wear this colored shirt.

   • He is not young enough to wear this colored shirt.
   • hoặc: He is too old to wear this colored shirt. (Câu này vẫn đúng ngữ pháp nhưng cách dùng "enough" sẽ hay hơn)

2. She is too weak to carry this box.

   • She is not strong enough to carry this box.

3. This pen is too expensive for me to buy.

   • I don't have enough money to buy this pen.
   • hoặc: This pen is not cheap enough for me to buy.