Найдите ошибки в предложениях

1) john often goes to the theather on sundays

2)they usually go to the park twice a week

3) how often do you play baseball?

1) is my sister  leaving to her place at the moment?   2) i  read  this book yesterday.3) you will play the piano tomorrow.4) we are returning from the museum now.5)our friends  do not  see mary every day.6) did the new school begin  working last year? 7)he often  speaks to me.8)he was  discussing that problem the whole morning yesterday.9)i will be reading this article at two o'clock tomorrow.