Simple and Progressive Tenses

Tomorrow at this time, I -------------(attend) a conference.

I saw a snake while I -----------------( walk) in the forest.

Shhh! Be quite! My sister -----------------(have) a test.

I won't go out now as it ----------------(rain) and I don't have an umbrella.

You can borrow my umbrela, I ---------------( not need) it at the moment.

The river Nile -------------------( flow) into the Mediterranean.

The river ------------------( flow) very fast today, much faster than usual.

He suddenly realized that he ----------------( not wear) his glasses.

Todd often -------(ride) horses when he was a boy.

She ----------------(let ) us know later when she is ready to leave.