Time conjunctions

I was listening to the radio _____ I heard the news.

• while
• when

Sharon waited in the car _____ Sam was filling the petrol tank.

• after
• while

I had _____ finished my dinner _____ my friend knocked on the door.

• hardly... when

• still... after

I have to do my housework _____ I can go out.

• before
• after

You can keep this book _____ you like.

• while

• as long as

Jack has been friends with Seb _____ they were at school.

• since
• after

She fell asleep _____ she closed her eyes.

• as soon as

• before

I can't pay the bills _____ my boss gives me my wages.

• because
• until