—Can you describe _____ it happened?
—Yes, I was riding on my bike _____ a car knocked me down from behind.
A.when; as | B.how; as | C.how; when | D.how; while |
推荐套卷
—Can you describe _____ it happened?
—Yes, I was riding on my bike _____ a car knocked me down from behind.
A.when; as | B.how; as | C.how; when | D.how; while |