用括号里的动词或短语的正确形式完成句子。
1. We have no more right to___ happiness without pro ducing it.(consume)
2. New factories are____ everywhere.( go up)
3. Stress and tiredness often ____ a lack of concentra tion.( result in)
4. She ____ round the room before she left.( glance)
5. He ____reducing military spending.(advocate)
6. The witness ____ that she had never seen Mr. Smith. ( state)
7. He ____ talking.( keep on)
8. What ____ you doing from 9 to 11 this morning? ( be)
9. We ____ some guests for dinner last night.( have)
10. How did it ____ that he knew where we were?( come about)