10. In about ten ____time, the world population will pass seven billion. (year)

　答案：1. first; one　2. angry; angrily　3. meeting; meeting (s)　4. the largest; larger　5. mist; misty　6. few　7. unhappily　8. we; ourselves　9. is　10. years’

9. Physics ____rather difficult for the girls, (be)

8. In those days, ____could depend(依靠)on no others but ____. (us)

7. “I've failed again,” he said ____. (happy)

6. Before 1969,____climbers got to the summit of Mount Qomolangma. It's too steep, too high and too dangerous, (a few)

5. Come out. Don’t be in the heavy ____any more. No one can see clearly in a ____day. (mist)

4. China’s population is ____in the world now. But I think India’s population may be ____one day. (large)

3. We are always ____just at the gate -before all the ____. Why not have a change? (meet)

2. “Where is Lily? I’m beginning to be ____with her now.” said Jim ____. (angry)

1. You are always the ____to arrive and the last ____to leave, (one)