Sandy talked so much about herself _______ others didn’t have any time to speak at the meeting. [ ]

____ does your friend come to China?—”Once a year.”[ ]

My cousin Andy can play _______ piano very well, buy he isn’t good at playing ______ basketball.

Are ________ her parents?

Once we discover a mistake, we should not ______ it but correct it immediately, to create better conditions for economic development.