| Our teacher saw us ______ on the desks and went out of the classroom. |
A. to sit B. sat C. siting D. sitting |
| Which of these do you think is ____ useful invention? |
A. the more B. the second more C. most D. the second most |
| Rose came to Beijing in 2002. She ______ here for eight years. |
A. was living B. live C. will live D. has lived |
| — ______. — Thanks. |
A. Why go skating tomorrow? B. What about going skating tomorrow? C. Help yourselves to some soup. D. Will you have a trip to Guilin? |