1 is most of farm work done by machine?

2 all the flights were cancelled because of fog

3 how are languages learnt?

4 when was that hospital opened?

5 the earth is protected from harmful radiation from the sun by the atmosphere

6 the house was broken into by the thieves

9 I was told to change the way by my friends

10 paper,the main writing material today was invented by the chinese

11 a new roof was put on last year

12 the dustbins are emptied every thursday

13 a new school is going to be finished in the village next year

15 he has been seen in 140 different countries since then

16 ann was given some bananas and some flowers

17 who was the poem written?

18 a lot of money is spent on advertising every day

19 this room may be used for the classroom

20 the women with a red hat was looked at by the children

21 the victims with food and clothing have been provided 

22 was lulu fed last night?