The course that Beijing University offers normally attracts 30 foreign students per year; _______ up to half will be from America.

Do you think grandpa and grandma _________late —No， the train is usually on time.

You should read some good books and they can ___________ a new world to you.

I want to relax myself right now. Would you pleasechange to _____music

Wherever such an area is located, it will be immediately ______ by the enemy if armed forces are lacking.