I. 

1. B recycle

2. A giant

3. C chance

4. C page

5. B cookie

II.

1. Organization 

2. Homeless

3. Elderly

4. Encourages

5. Neighborhood 

6. Environmental 

7. Donated

8. Benefited

9. Enabled 

10. Volunteer

III.

1. Have offered

2. Cleaned

3. Have...recycled

4. Tutors

5. Did...provide

6. Has donated

7. Did...participate 

8. Did not start

9. Sing

10. Have not finished 

V.

1. B raise

2. C tradition

3. D without

4. A benefits 

5. D tutoring

6. C have offered 

7. B didn't join

8. D because

9. A have you visited

10. B gave 

VI.

1. C with

2. A gap

3. D plan

4. B population

5. C early

VII.

1. Painted a mural over graffity before

2. Has started recycling rubbish for two years

3. Was lazily, he failed the exam

4. Five mounts when they last clean up the street

5. Donating books and clothes ten years ago

Mid-term test 1

I.

1. C occasion

2. C object

3. B fragile 

4. B of

5. C charity

II.

1. Have...done

 Joined

2. Went

3. Have finished

4. Have... riden 

5. Haven't arrived

6. Have got

7. Started, have finished

8. Is

III.

1. Healthy

2. Longer

3. Less

4. Collecting

5. Quiet

V.

1. I was standing right next to her but she didn't recognize me

2. The road was slippery so they couldn't drive fast

3. If you work too fast, you will make so many mistakes 

4. People admire him because he has talent

5. Kien asked me to join volunteer project and I agreed

VI.

1. We should eat a lot of fruit and vegetables every day

2. Because it is rainny, we couldn't keep on cleaning the street

3. Unless the weather improves, the garden party won't take place

4. The libary lends books to both teachers and students

5. He play this piece of music the most beautifully 

I

1d

2a

3c

4b

5b

V

1d

2a

3c

4b

5b

6c

7d

8a

9c

10c

VI

1d

2a

3c

4b

5b