__________ ，I went out for a walk.
A.There was nothing to do B.There being nothing to do
C.There had nothing to do D.There were nothing to do
He had known the matter before you told him, so you _________ have told it to him.
A.mustn't B.can't C.needn't D.shouldn't
I'm sorry, sir. Your recorder isn't ready yet. It _____ in the factory.
A.is being repaired B.is repaired C.has been repaired D.hasn't repaired
He’s working hard for fear that he _______.
A.should fall behind B.fell behind
C.may fall behind D.would fallen behind
That they were wrong in these matters _____ now clear to us all.
A.is B.was C.are D.were
Do you think climbing is _____ to our health?
A.beneficial B.invaluable C.advisable D.worthy
