题目内容
| Mr. Li swimming for 3 hours, and his son an hour ago. |
A. has been; started B. have started; has started C. started; started D. has started; has started |
试题答案
A
相关题目
题目内容
| Mr. Li swimming for 3 hours, and his son an hour ago. |
A. has been; started B. have started; has started C. started; started D. has started; has started |
试题答案
A