Our math class (start) (a)   tomorrow.

They (send) (a)   four emails to Jack lately.

Paul (attend) (a)   the English class twice so far.

The boy (take) (a)   a physics course once a week.

Mr. John (not give) (a)   us homework last Monday.

You (meet) (a)   your tutor tonight at class.

We (play) (a)   mobile games every afternoon.

He (check) (a)   all of my emails tonight.

He (install) (a)   his favourite apps on my netbook last week.