1 I haven't seen Minh for three years.

2 My grandmother told me to open the door for her.

3 Nam used to play soccer well.

4 I am not strong enough to part part in the games.

5 She sings well.

6 Na is tired enough to stay in bed.

7 Lan isn't old enough to be in my class.

8 They are going to invite him for dinner tonight.

9 Minh ought to study harder for his exam.

10 Because My sister felt sick yesterday, she stayed at home. 

11 Mr. Smith used to live on a farm in the countryside.

12 The teacher asked her student not to forget to say thank you to their moms.

13 It's dangerous to driving too fast.

I. Rewrite the second sentence, using the given words or phrase.

1, It is three years since I last saw Minh.

→ I haven't seen Minh for three years.

2, Please open the door for me" said My grandmother

→ My grandmother told me to open the door for me

3, Nam doesn't play soccer as well as he used to.

→ Nam used to play soccer

4, I'm not strong. I can't take part in the games.

→ I'm not strong enough to take part in the games

5, She is a good singer.

→ She sings well

6, Na is very tired. she will stay in bed.

→ Na is tired enough to stay in bed

7, Lan is only ten years old. She isn't in my class.

→ Lan isn't old enough to be in my class.

8, They plan to invite him for dinner tonight. 

→ They are going to invite him for dinner tonight. 

9. Driving too fast is dangerous.

→ It's dangerous to driving too fast

10. Minh should study harder for his exam.

→ Minh ought to study harder for his exam.

11. My sister felt sick yesterday, so she stayed at home.

→ Because my sister felt sick yesterday, so she stayed at home.

12. Mr. Smith doesn't live on a farm in the countryside anymore.

→ Mr. Smith used to live on a farm in the countryside anymore.

13. "Don't forget to say thank you to your moms," She told her students.

→ The teacher asked her student not to forget to say thank you to your moms

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