David is the current holder of the 5,000-meter world record, but there is no ____ that he will win in the Olympic Games.
Mr. Black __________ Shanghai in a few days. Do you know when the earliest plane __________ off on Sunday?
I don't know if she __________, but if she __________, I will let you know.
—What did the teacher say just now? —He said that the earth __________ around the sun.
Nobody but a few little boys __________ in the garden now.
Would you please keep silent? The news that the milk contains a harmful chemical __________ and I want to listen.