根据对话情景和内容，从对话后所给的选项中选出能填入空白处的最佳选项，并在答题卡上将该选项涂黑E涂AB,  F 涂AC，G涂AD
Emma: Did you see many people at the street corner when you came to school this morning?
Oliver:      .
Emma: What was it all about?
Oliver: A serious accident happened.     .
Emma: Oh, dear! A lot of people must have been hurt or even killed.
Oliver: You are right!    .
Emma: I hope nobody was killed.
Oliver:   . And we must be careful especially at this time of day when the traffic is heavy.
Emma: I agree with you.  .

A．Yes, I did.

B．I hope so.

C．Yes, it is terrible.

D．All the injured were sent to hospital immediately.

E. I don’t know how many people were injured and killed.
F. All will be safe when everyone knows and follows the traffic rules.
G. A drunken driver’s heavy truck struck (撞) a bus full of passengers.