问题：
—I knocked into a tree when I went to the railway station for my friends.
—I suppose you _______ too fast.
[ ]
A. drive
B. are driving
C. drove
D. were driving
—I knocked into a tree when I went to the railway station for my friends.
—I suppose you _______ too fast.
B. are driving
C. drove
D. were driving
—I suppose you _______ too fast.
[ ]
A. drive B. are driving
C. drove
D. were driving
参考答案：