Use the correct form
31 . Stop (talk) _____________ ; I am trying (finish)_____________a letter
32. His doctor advised him (give) _____________ up (jog)_____________
33. My watch keeps (stop)_____________
34. People used (make)_____________fire by (rub)_____________two sticks together
35. He hates (answer)_____________the phone, and very often just lets it (ring)_____________
36. If you go on (let)_____________your dog (chase)_____________cars he will end by (be)_____________run over
37. I prefer (drive) _____________ to (be)_____________driven
38. I advise you (start)_____________(look)_____________ for a flat at once
39. Would you mind (lend)_____________ me some money? I forgot (cash)_____________a cheque
40. (Lie)_____________ on the beach is much more pleasant than (sit)_____________in the office
41. She like her children (go) _____________ to the dentist every six months.
42. An instuctor is comming (show) _____________ us how (use) _____________ the machine
43. I have no intention of (go)_____________to that film ; I couldn't bear (see)_____________ my favorite actress in such dreadful part.
44. I suggest (telephone)_____________the hospitals before (ask)_____________the police (look) _____________for him
45. After (hear)_____________the conditions I decided (not enter)_____________ for the competition
46. Some people seem (have)_____________the passion for (write)_____________ to the newspapers
47. He expects me (answer)_____________by return but I have no intention of (reply) _____________ at all
48. He postponed (make) _____________ a decision until it was too late (do)_____________ anything.
49. Try (forget)_____________it ; It isn't worth (worry) _____________ about it
50. There is no point in (remain) _____________ in a dangerous place if you can't do anything(help)_____________the people who have(stay)_____________there