I
1. A. knife B. of C. leaf D. life ( gạch chân ở chữ f )
2. A. although B. enough C. paragraph D. cough
3. A.headache B. architect C. chemical D. children
4. A. junk B. sun C. put D. adult
5. A. aerobics B. calories C. cycling D. doctor
II
1A
2D
3B
4A
5A
6C
7D
8D
9B
10A
11D
12C
13A
14C
15D
16B
17A
18C
19B
20C