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1) i won't play chess tomorrow. 2) he has never been to london. 3) where are  you going now? 4) we travelled around europe last  year.5) if he does  not see her tomorrow, he'll  leave her a note.6) she usually reads in the evening.7) what will  you be doing  at 6 o'clock tomorrow.8) yesterday i found the book which i had lost  in summer.9) what does  your brother do every day? 10) when will  he arrive  tomorrow? i will  still be  sleeping 11) listen! somebody is  playing the piano in the next room12) where did  you go last summer? 13) he has  not met  peter since they were pupils.14) how many pages will  you have  read by 5 o'clock tomorrow? 15) when i left home, the snow had  already stopped. 16) what was  nick doing when you rang him up yesterday? 17) if he does  not help me, i will  not have  written a composition by next monday.18) i didn't go  to the cinema yesterday, i was  watching tv the whole evening.19) he has  not done his homework yet.20. what will  you buy at the shop tomorrow?