一、
1. mangoes
2. our
3. sad
4. small
5. can't
6. them
7. families
8. fishes
9. do not
10. Helen's

二、
1. I
2. J
3. F
4. C
5. B
6. H
7. E
8. A
9. D
10.G

三、
1. B
2. C
3. C
4. A
5. C
6. C
7. A
8. C

一、
1. mangoes
2. our
3. sad
4. small
5. can't
6. them
7. families
8. fishes
9. do not
10. Helen's

二、
1. I
2. J
3. F
4. C
5. B
6. H
7. E
8. A
9. D
10.G

三、
1. B
2. C
3. C
4. A
5. C
6. C
7. A
8. C