1.we let our sons (chat) ..chat.. on the
2.they've got some workers(do) to do
3.peter gave up(play ) ..playing.. vd games
4.he'd like(fly) ..to fly.. an aeroplane
5.I enjoy(write) ..writing.. picture postcards
6.do you know what(do) ..to do.. if there's a fire in the shop?
7.avoi(make) ..making.. silly mistakes
8.my parents wanted me(be) ..to be.. home at 11o'clock
9.i dream about(build) ..building.. a big house
10.i'm hoping(see) ..to see.. lisa
11.i can't imagine Petter(go ) ..going.. by bike
12.he agreed(buy) ..to buy.. a new car
13. the question is easy(answer) ..to answer..
1 4.the man asked me how(get) ..to get.. to the airport
15.i look forward to(see) ...seeing... you at the weekend
16.are you thinking of(visit ) ..visiting.. london?
17.i am used to (run) ..running.. in the park in the morning
18.the teacher expected sarah(study) ..to study.. the night shift
20.my classroom needs(repaint ) ..to be repainted..