Present continuous affirmative and negative

Samuel __ _______ a letter. (to send)

He ____ _______ an e mail- (to send)

Laura __ _______ a test. (to write)

She ____ _______ a letter. (to write)

Rosy and Mark _____ _______ in an office.(to work)

They ___ _______ in a farm. (to work)

My mother and I ___ _______ to the park. (to walk)

We ____ _______ home. (to walk)

I __ ______ a horse. (to ride)

I __ ______ a bicycle. (to ride)