Verbs   practice using all the tenses here.

To be, present continuous

I am     You are
He is    They are
She is   We are
It is

I am studying English right now.

 Present Continuous and Simple Present
I am working on the computer right now, but I study with a book everyday.		 Simple Past and Past continuous

I was working yesterday when the phone rang. 

 Future -going to
Future-will Modals, Helping Verbs Present Perfect Past Perfect

Mixed Verb Tenses from ESL-Classroom.com

Irregular Verbs from www.chompchomp.com