III/ Do as directed in parentheses: 
1. The last time we visited our grandparents was two months ago. (rewrite the sentence that the meaning is the same)
→ We haven't............... 
2. The red book is expensive, but the blue book is cheap. (write sentence with "as...as") 
→ The red book isn't.. 
3. Tam doesn't study as well as she used to. (rewrite the sentence, using "used to")
Tam................... 
4. It's two years since we were close friends. (rewrite the sentence, using "for").
 → We have....

giải hộ mình vs ạ