一、
1. closed
2. carefully
3. being
4. is walking
5. knocking
6. most clever
7. visitors
8. hers
9. to have
10. will visit

二、
1. A
2. C
3. C
4. C
5. D
6. B

一、
1. closed
2. carefully
3. being
4. is walking
5. knocking
6. most clever
7. visitors
8. hers
9. to have
10. will visit

二、
1. A
2. C
3. C
4. C
5. D
6. B