None of them knew what happened __________we told them about it.
I think students should _______ to have at least one hour a day for sports.
This is her sweater. Where is __________? I can’t find it.
—I’m going to buy a new car. Any advice, John?—Well, it depends on _______. If money isn’t a problem, you can buy a BMW.
The children without parent _______ good care of by their teachers in this special school.
—Lily, hurry up! The bus is coming.—Oh, no, we _______ cross the street until the traffic lights turn green.