Tom _______(throw) paper aeroplanes when Jerry ______(come) in.
was throwing, came
When the kids _______(run) into the kitchen, Helen ______ (make) a cake.
ran, was making
We ________(have) a picnic when a huge spider ______ (appear) on a log.
were having, appeared
The dog _____(have) fun when his owner _____(call) him.
was having, called
