—Your sister’s plan is not quite practical.Why not try to persuade her to give it up?—My sister is very stubborn,so it is________to try to change her mind.
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.