WHEN/WHILE: SIMPLE PAST+PAST CONTINUOUS

She was swimming in the sea ____ she saw the shark.

• while

• when

____ he arrived at the store, it was closing.

• When

• While

While I ____ _________, (SLEEP), the alarm went off.

• was sleeping

• was slept

It was raining, ____ we arrived the beach.

• when

• while

Jack ______(CALL) Mary, while/when she was studying.

• calling

• called

I ____ _______(WORK) when I heard the news.

• worked

• was working

When/While I ___ _________(READ), the alarm went off.

• was reading

• read

We were running, ____ he threw the ball.

• when

• while

____ it happened, they were sleeping.

• While

• When

She ______ (SEE) the bright light while she was looking out of the window.

• was seeing

• saw