She looked at the professor and wondered where she_______ him.

What do you think of the concert?— , it’s not bad, though several songs are out-of-date[ ]

If nature does not provide man with the necessary material, it is the laboratory ____ he will turn to for it．

Interest is as_______to learning as the ability to understand,even more so.

He _____get up late, but now he gets upearlier.