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1,2,3,4 задание
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1.1a; 2c; 3d; 4b; 5b

2.1 if he hadn`t broken; 2 will sing; 3 pay; 4 wouldn`t have known; 5 doesn`t ask

3.1didn`t; 2 hadn`t; 3 would; 4 were; 5 didn`t break; 6 weren`t; 7 wouldn`t have told; 8 could; 9 were; 10 knew

4.1 If Tim hadn`t gone to a party last night he wouldn`t have gone to bed late. 2 If his alarm clock had gone off he wouldn`t have woken up. 3 If Tim weren`t always tired he wouldn`t have overslept this morning. 4 If he hadn`t missed his train he wouldn`t have had to wait an hour for the next one. 5 If he hadn`t arrived at work late the manager wouldn`t have been angry.