28. If our car had not ________, we would have been here on time.
Without proper lessons, you could _____ a lot of bad habits when playing the piano.
It suddenly _____ to me that we could ask our neighbors to help us.
The father as well as his three children _____ skating on the freezing river every Sunday afternoon in winter.
He kept looking at her, wondering whether he _____ her somewhere.
When the soldier _____ his shirt, he discovered that his arms were black and blue.