1. --I hope you can come to the dance next Saturday.
--- .
A. Sure, but I have to visit my grandpa.
B. Not at all. I'll be glad to.
C. I really can't agree with you; I prefer science.
D. I'm sorry, but I have to help my sister with her English.
2. I was just about ___ road ___ a ship came to us.
A. traveling on; while B. to travel on; while
C. traveling by; when D. to travel by; when
