1. I was having lunch ............ James arrived.

when

while

after

none

2. ............ I heard the doorbell, I went to the door.

When

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After

none

3. ............ Jo was washing her hair, I did my homework.

While

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none

4. We ate our sandwiches ............ we walked around the park.

while

when

as

none

5. We ate our sandwiches ............ walking around the park.

as

while

after

none

6. ............ Mrs Scott came back to her hotel, she called the elevator.

While

When

After

none