when vs while

Front

I.........in the park when I met Serena

Back

was walking

Front

I..........to school when I saw the accident

Back

was going

Front

______ I saw him, he was eating icecream.

Back

When

Front

_____ I was doing my homework, my brother was watching TV.

Back

While

Front

I changed my clothes _______ I got home.

Back

when

Front

I met James _______ I was talking to John.

Back

while

Front

I was watching TV when she ______________

Back

scared me

Front

When the doorbell rang, I ____________ a book.

Back

was reading

Front

Tom and John were surfing over the waves while I __________at the hotel,

Back

was relaxing

Front

While I _____________the dishes, my friend came home.

Back

was washing