Past Continuous, Past Perfect, Past Perfect Continuous

They __ (study), when I saw them in the library.

• studied

• have studied

• had studied

• were studying

Mom __ (cook) something for dinner while the kids were watching TV.

• cooked

• has cooked

• had cooked

• was cooking

I __ (work) in the garden, when my dad came home.

• worked

• have worked

• had worked

• was working

We __ (not listen) to the teacher, while she was speaking.

• didn't listen

• haven't listened

• hadn`t listened

• weren't listening

My little sister Jane __ (study) in the living room when the doorbell rang

• studied

• has studied

• was studying

• had studied

While it was raining, I __ (have) a nice cup of coffee.

• had

• have had

• was having

They __ (sleep) peacefully until the alarm rang.

• slept

• have slept

• were sleeping

• had slept

After they __ (eat) they cleared the table.

• ate

• have eaten

• had eaten

• were eating

She __ (finish) her homework by the time I arrived.

• finished

• has finished

• had finished

• were finishing

She __ (read) the book before she __ (write) a summury.

• read, had written

• had read, wrote

• was reading, wrote