Past Simple or Past Continuous

My mum looked at the weather outside: it was grey, but it _______.

My dad__________ (see) the helicopter as he ____ (swim) back to the shore.

While I _____________ (walk) along the beach, I ___________(find) some money.

They _______________ (talk) to the doctor when they ___________(hear) a song.

You didn't answer when I phoned you this morning. What _____________?

Max switched off his computer,________ his coat and ______ the office.

While Alex ______________(search) for my keys, he _______________(find) the note. 

Helen and Rob __ (watch) TV when they ____(hear) a loud scream.

Nika______(ask) the teacher for help while she ______(do) the maths exercises.

As Igor______________ (get dressed), he ______(remember) something important.

As the police ___________(help) the man, they _________(see) blood on the floor.

Mr. and Mrs. Green ... in the dining room when their children entered the room.