题目内容：

根据对话内容，从方框内选择恰当的句子将对话补充完整（选项中有两项是多余的）

Betty:I was late for school today.

Mum:Why? 1.

Betty:I took the bus. There was a road accident, and the traffic was very heavy. Nobody was

late, except me. Maybe I should go to school by taxi.

Mum: 2. And taxis are very slow in heavy traffic, too.

Betty:Then what about going by bike?

Mum:3. .There is too much traffic.

Betty:  But most of my classmates ride bikes, and it’s quite safe. Don’t worry. I’ll be careful.

Mum: 4.

Betty:He goes to school by bike though it’s so crowded!

Mum:All right .You can ride your bike to school,5.

A.What happened?

B.It is the most comfortable way ,but it’s also the most expensive.

C.How does Tony go to school?

D.That’s a good choice, but it’s a bit dangerous

E.Her home is the closet to school.

F.How about Lingling?

G.but remember to be careful all the time.