. _______ was known to them all that William had broken his promise ______ he would give each of them a gift.
— I drove to Zhuhai for the air show last week. — Is that ____________ you had a few days off?
No one can be sure _____________ in a million years.
It was a matter of ____________ would take the position.
___________ caused the accident is still a complete mystery.
It is generally considered unwise to give a child _____________ he or she wants.