1. of

2. to

3. of

4. for

5. of

6. at
Ex2:

1. filled

2. I = > he/she (has )

3. didn't go

4. did | do | did

5. brush

I.

1. tooth ( teeth )

2. appointment

3. dentist

4. toothache

5. cavity

6. sorgern

7. problem

II.

2. What's the matter with Minh ? He has a headache.

3. What's wrong with Hoa ? She has a fever.

4. What's the matter with Nga ? She has a stomachache.

5. What's wrong with you ? I have a backache.

=>
Ex1/
1. of
2. at
3. about
4. for
5. of
6. after
Ex2/
1. filled
2. am having
3. did not go
4. did/do/did
5. brush

Ảnh 2/
I/
1. tooth
2. appointment
3. dentist
4. toothache
5. cavity
6. surgery
7. problem

II/
2. What's the matter with Minh?
He has a headache.
3. What's the matter with Hoa?
She has a fever.
4. What's the matter with Nga?
She has a stomachache.
5. What's the matter with you?
I have a backache.