Xi'an，________ city of natural beauty will host ________International Horticultural (园艺) Exposition in 2011.
| A．a; the | B．an; a |
| C．the; a | D．an; a |
8．----I’ve got to go now.
---Must you? I you could stay for dinner with us.
| A．think | B．thought | C．have thought | D．am thinking |
The main cause of HIV / AIDS infection in China is drug abuse, ______ is very serious in Yunnan.
| A．what | B．who | C．that | D．which |
9.With the world changing fast, we have something new with all by ourselves every day.
| A．deal | B．dealt | C．to deal | D．dealing |
10. Professor Williams keeps telling his students that the future to the well-educated.
| A．belongs | B．is belonged | C．is belonging | D．will be belonged |
The main cause of HIV / AIDS infection in China is drug abuse, ______ is very serious in Yunnan.
| A．what | B．who | C．that | D．which |