16.Does your brother like [listen]........listening.......to music in his free time?
17.i think in the future,more people [enjoy]......will enjoy....going out by bicycles
18.my father says when he's retired,he [go]...will go....back to his village to do the gardening
19.we are planting trees around our school now .our school [be].......is going to be........surrounded by a lot of green trees
20.lan says she loves collecting pens but she [not/continue]......won't continue........this hobby from next year
21.when i was a child,i used [dream].....to dream.....of being an astronaut
22.i'm terribly nervous.i'm not used [speak]..to speaking...to a large audience
23.it took us ages to get used [live]....to living.......in an apartment house
24.lots of trains used [stop]......to stop..........here,but not many do now
25.didn't nick use [work].....to work.......on a building site?
26.she may be late if she [not hurry].....does not hurry ......
27.if you are kind to me,i[be].....will be.......good to you
28.if he [give]......gives........up smoking,as his doctor orders ,he will be soon well again.
29.you [not pass]....won't pass.......your driving test unless you drive more carefully
30.he'll be ill if he [not stop].....does not stop.....worrying so much