What did the mouse do while he was walking?
It whistled loudly while it was walking.
When did Pam fall down? (while)
She fell down while she was playing tag.
When did Tim and Tom read a book? (while)
They laughed while they were reading a book.
What did Tim do while he was hopping?
He threw up while he was hopping.
When did the girl sneeze? (when)
She was coughing when she sneezed.
When did the girls pick up the wood? (while)
They picked up the wood while they were building a house.
What did Paul do while he was cooking dinner?
He burned his hand while he was cooking dinner.
What did the boys and girls do while they were waiting for the bus?
They talked while they were waiting for the bus.
When did Alice pick an apple? (while)
She picked an apple while she was climbing the tree.