题目：_____dangerous it is to ride fast on a busy road!
题目：_____pity you missed the lecture again!
题目：-. What do you think about my hometown?
I plan to make a trip to your hometown.
题目：-What about mailing it in the fastest way?
By air mail
题目：-Would you like me to help you to make a plan today for the summer vacation? It is nice of you to say so, but I'm busy tonight."