11．Some people________（无所事事）while others are doing all the work.
12．________（平均的），he spends two hours a day in reading.
13．Real incomes of workers________（上升）by 10% in the past year.
14．Tom________（沉溺于）playing golf，thinking about nothing but it.
15．A minibus was sent________（接送）the tourists at the park gate.
16．They managed to________（继续）their experiments in spite of the difficulties.
17．Usually teachers________（比作）burning candles.
18．Since the examination is________（即将到来），I have to give up sports.
11. are sitting around 12. On (the) average 13. have gone up 14. is addicted to
15. to pick up 16. carry on 17. are compared to 18. around the corner