past tense vs past continuous tense

I... (come) home while my sister ... (water) houseplants.

• came, watered

• came, was watering

• was coming, watered

was Andra ... (drive) when you ... (call) him ?

• driving, were calling

• drove, called

• driving, called

I ... (send) him an email with the file when you ... (receive) the confirmation.

• sent, received

• was sending, was receiving

• was sending, received

at five o'clock this morning she ... (do) her homework

• were doing

• did

• was doing

while I ... (walk) down the street, it ... (begin) to rain

• walked, was begining

• was walking, began

• walked, began

.... they still ... (clean up) the mess at 10 am today?

• were, cleaning up

• was, cleaning up

• did, clean up

the children ... (play) in the playground at this time yesterday

• played

• was playing

• were playing

boby ... (lie) under the tree to sleep when a big leaf ... (fall) onto his head.

• lay, fell

• was lying, falling

• was lying, fell

the old woman ... some cookies for her family yesterday

• baked

• cried

• climbed

they ... TV when I arrived

• were watching

• were watched

• watched