用所给词的适当形式填空.1、Yesterday I was very busy.I _____(work) on the
用所给词的适当形式填空.
1、Yesterday I was very busy.I _____(work) on the farm aii day.
2、The boy _____(walk) in the street when he saw the foreigner getting out.
3、Mother ____(cook) while father ______(wash) his car this morning.
4、When the man ____(visit) the museum,he friends ____(see) him.
5、After a while,the boy ___(go) on playing computer games.