He could play the piano at the age of five.
| A．by five years old | B．when he is five |
| C．in five years | D．when he was five |
It's nice of you to ______ so much time showing me around your school.
A. take B. spend C. cost
-- Have you ever been to Shanghai, Mary?
-- Yes. I _______ there for three days with my parents before.
A. have gone B. have been C. went
The teachers ______came for a visit are foreigners.
| A．who | B．whom |
| C．whose | D．which |
---Mrs Black seldom eats meat,________ ?
---________ . She is a vegetarian(素食主义者).
| A．doesn't she, Yes | B．does she, Yes |
| C．doesn't she, No | D．does she, No |
We don’t believe ______ little children can do ______ much work in such a short time.
| A．so, so | B．so, such |
| C．such, so | D．such, such |