4.If more and more people have cars, cars will become___________. (cheap)

3.Do you know that as people’s_______ get better, more of them will buy cars? (life)

2. Please have a__________about what we’ll do next.(discuss)

1.The_______ population may be the greatest challenge of the world today. (increase)

6..He found his daughter could__________[　　　　 ] answer his question..

5..Each person will have one half to one___　 __[　　　 ] meter of space to live in.

4..My parents couldn’t____　 ___[　　　　 ] if they would buy a secondhand car.

3.At the beginning of the 21 st __________[　　　　　　 ] there were a few bridges over the Changjiang River.

2.Look at your watch for just one__________[　　　　　 ].

1..The car is_______[　　　　 ]90,000 dollars.