"On no account ____to feed the animals", the warning can be seen on the signboard in front of every cage.
A．allow visitors B．visitors are allowed
C．are visitors allowed D．are allowed visitors
Thinking ______ you know_______ in fact you don’t is a terrible mistake.
A．that; that B．what; what C．that; what D．what that
He is only too ready to help others, seldom, ____, refusing them when they turn to him.
A．if never B．if ever C．if not D．if any
--- Don't worry. I've just sent an ambulance to you. They ________ be there any second.
A．could B．might C．would D．should
At first he was not satisfied with the new job but decided to give himself a few months to see ___________ it got any better.
A．when B．how C．why D．whether
I promised to get there before 5 o’clock, but now the rain is pouring down. They _______ for me impatiently.
A．may wait B．ought to wait
C．could wait D．must be waiting
