21a urban
22d voluntary
23a becomes
24c with
25b finished
26b connected
27d improvement
28d teacher's office
29b smiled nicely
30a they miss school
31c worried
32b Bullies at school
33a Sharlo suggested helping Carlo with the dishes
34c If he smoked so much, he couldn't get rid of his cough
35a Bill said that he had never been to Russia and he thought he would go there the next year
36b The car was too expensive for him to buy
37a The man opened the window in order to get some fresh air in the room
38a Mr Smith to whom I spoke on the phone last night is very interested in our plans last night
39d Although Mike graduated with a good degree, he joined the ranks of the unemployed
40c No matter how hard she tried she could hardly pass the driving test
