I.

1. walk

2. to go

3. will have

4. are taking

5. were seeing 

6. has lived

7. working

8. is written 

II.

1. B

2. A

3. B

4. A

III.

1. national

2. household

3. collection

4. harmful

IV. 

1. Nam failed the exam because he was very lazy.

2. Even though he was very tired, he tried to finish his work.

3. She asked me when my school vacation started.

4. The laptop, which my mother gave me on my birthday, is very modern.

Xin ctlhn ạ!

I:

1. walk (used to + Vinf: đã quen với việc gì)

2. go (everyday - HTĐ)

3. will have (ĐKL1)

4. are taking (now - HTTD)

5. saw (were - QKĐ)

6.has lived (since - HTHT)

7. working (get used to + Ving: quen dần với việc gì)

8. were written (câu bị động QKĐ)

II:

1.B /ʌ/ còn lại /a/
2.A /z/ còn lại /s/

3.B /i/ còn lại /i:/

4.A /ʊ/ còn lại /a/

III: 

1. national (adj) (holidays - n)

2. household

3. collection (n) (tính từ sở hữu + N)

4. harmful

IV:

1. Nam failed of the exam because he was very lazy.

2.He tried to finish his work even though he was very tired.

3. She asked me when my school vacation started.

4. The laptop which may mother gave me on my birthday is very mordern.

Chúc bạn học tốt !!!

@Phương