If you want to see a doctor, fix the date with him ahead of time. This is a common ___________ in the USA.A. habit B. law C. rule D. custom
Could you tell me _______ ?
He asked me _______ I could sing the song “My Heart will Go On.”
Our teacher told us that the moon _________ round the earth.
It makes no difference __________.
They don’t know _______ their parents are.