10. The baby laughed _________________ when her mother told her a funny story.
A. happy B. happiness C. unhappy D. happily
11. We _______________ up our neighborhood when that conservationist arrived.
A. cleaned B. cleaning C. are cleaning D. were cleaning
12. We are really looking forward _________________ you again.
A. to see B. seeing C. to seeing D. for seeing
13. I got up late in the morning because my alarm clock didn’t ______________.
A. go off B. get off C. put off D. come off
14. Lan spoke English _______________ after she lived in England for several months.
A. nature B. natural C. naturally D. unnaturally
15. Ba really wants to buy new tables and chairs. _______________, new furniture costs too much.
A. However B. But C. Therefore D. So
16. _____________ are used to kill insects and weeds so as to help crops grow better.
A. Pesticides B. Dynamite C. Treasures D. Creatures
17. Scientists are looking for an __________way to reduce energy consumption
A. effect B. effectively C. effective D. effectiveness
18. On Passover Day, people celebrate ……….from slavery
A. power B. dependence C. boredom D. freedom
19. If you want to save money, you should ________the amount of water your family uses.
A. increase B. reduce C. adapt D. repair