— How long have you been at home? — Half
题型：选择题
问题：
| — How long have you been at home? — Half an hour. My son _____ me home. |
| A. would drive B. had driven C. has been driving D. drove |
| — How long have you been at home? — Half an hour. My son _____ me home. |
| A. would drive B. had driven C. has been driving D. drove |