happening at the moment speaking.

temporary or changing activities and situations.

habits and repeated activities.

the facts and general truths.

started in the past and are unfinished and still going on now.

action start in the past and have connection with present.

describe completed activities without mentioning a specific time.

The train left at eight and it’s ten now. So, we ________ for two hours

The last time I saw Keira was in July.

I ________ Keira since July.

I ______ architecture from 2004 to 2009.

The first action to take place when we're talking about two past actions.

activity completed at the specific time.

past action that were in progress over a long period of time.

uncompleted action that took place before a second past action.

Rosie ________a lot when she was a baby.

I couldn’t sleep because I _____________ in a tent before.

My teacher is ______ his research.

The tutorial _______ are expensive.

That new student is really __________ – he thinks he’s better than everyone else. (important)

Her _________ is very lose because she failed the exams.