【单选题】
He his success to good luck.
【单选题】
Nobody knows his _____ for helping us.
【单选题】
There is no doubt ____he will succeed in his business.
【单选题】
His success[填空] hard work.
【单选题】
The boy _______ his hands just now.
【单选题】
David [填空] like his teacher.
【单选题】
David [填空] like his teacher.
【单选题】
The girl is not so [填空] as his sister.
【单选题】
She insists that he ______ his now.
【单选题】
The student paused for a while, and then ( ) with his presentation.