Maira is doing this work.- Present Continuous

Maira does this work.- Present Simple

Maira was doing this work.-Past Continuous

Maira did this work.-Past Simple

Maira will do this work.-Future Simple

Present Simple

Maria does this work every day.

Past Simple

Maria did this work last Monday.

Future Simple

Maria will do this work tomorrow.

Present Continuous

Maria is doing this work now (She is busy)

Past Continuous

Maria was doing this work at 5 p.m. yesterday.