Mr Smith has a lot of business______. I know by______ that this man cannot be trusted.
Choosing the right dictionary depends on ______ you want to use it for.
More than a dozen students in that school _______ abroad to study medicine last year.
----Why did you leave that position? ----I ______ a better position at IBM.
Some experts demanded that children _______ time to sleep and play.
—Mum, can I listen to music while doing homework? — Don’t even think about it._____.