27.B
28.C
29.C
30.A
31.A
32.B
33.C
34.C
35.B
36.A
37.C
38.B
39.A
40.B
41.C
42.A
43.B
44.A
45.B
46.C
47.C
48.B

C. Reading:
1.
1) nervous
2) smiles
3) cavity
4) brush
5) happy
2.
1. F
2. T

C
1.
(1) nervous
(2) smiles
(3) explains
(4) cavity
(5) brush
(6) happy

C
2. read the text:
1) F
2) T
Answer the question
1. Because every year millions of people catch it
2. They are: a runny nose, a slight fever, coughing and sneezing
3. It will last for a few days

5.
1) When did the Robinsons visit Ho Chi MInh city?
2) What did she buy for her friends?
3) How was your vacation in Nha Trang?
4) Where did Lan hang the poster?
5) How often does Minh brush his teeth?
6) Why is Simon in a lot of pain now?
7) How did you feel after eating that food?
8) When did Nga go to see the dentist?
9) How long does it take Dr Phong to fill Van's tooth?
10) Why did she go to see the doctor?

6.
1) You had better brush your teeth at least twice a week
2) Linh had better not stay up too late
3) You had better do morning exercise regularly
4) She had better take some aspirin
5) You had better not make such a noise in hospital
6) You had better not eat too much candy
7) We had better not smoke and drink