Choose the correct word to complete the sentences. Sometimes both are correct.

1. I rang my mum ____________ ______ I was waiting for my train.
A) when
B) while
C) Both are correct

2. I’ll give them your message as soon as I ____________ ______ there.
A) get
B) will get
C) Both are correct

3. Maria cleaned the kitchen ____________ ______ I did the bathroom.
A) as
B) while
C) Both are correct

4. Before ____________ ______ they went to an exhibition in a little gallery.
A) leave
B) leaving
C) Both are correct

5. We can have lunch ____________ ______ we’ve finished this.
A) when
B) as soon as
C) Both are correct

6. The phone rang ____________ ______ I was shutting the front door.
A) while
B) just as
C) Both are correct

7. We spent the morning in the park and ____________ ______ we went home for lunch.
A) after that
B) afterwards
C) Both are correct

8. The letter arrived ____________ ______ we were having lunch.
A) while
B) just as
C) Both are correct

9. I met the others ____________ ______ I was on my way to the station.
A) when
B) as
C) Both are correct

10. After ____________ ______ my room, I was exhausted.
A) to clean
B) cleaning
C) Both are correct