1. --- Jack, could you help me when the plane will take off on the Internet?
--- I'm sorry, my computer doesn't work.
A. get out B. look out C. take out D. find out
2. We should give our seats to old when they get on the bus.
A. a B. an C. the D. /
3. This song is very popular with young.
A. a B. an C. the D. /
4. Tianjin is one of largest cities in China.
A. a; the B. the; / C. the; the D. a; /
