Find and correct one mistake in each sentence. 1 i dont know where i do get off the bus. 2 i dont know what to play chess. 3 we"re not sure where we to meet. 4 i dont know what do now. 5 we dont know when get the bus.. 6 im not sure what do i buy for sues birthday. 7 we dont know how many tickets to buying.

1) i dont know where i can
2)i dont know how to play chess
3) we are not sure where we should meet
4)i dont know what to do know
5)we dont know where take  the bus
6)i am not sure what should ibuy for..
7)we dont know how much tickets to buy