--- Can I help you, sir?
---I’m afraid you can’t. I have my students’ papers________.
A．to be graded B．graded C．grade D．to grade
---Let’s back up. Where was I?
---You ___________________about the trip to South Africa.
A．were talking B．talked C．are talking D．would talk
The couple are spending their holiday on _____is described as one of the most beautiful islands.
A．that B．what C．which D．where
Up to now, they _______enough money for students who can’t afford to go to school.
A．are raising B．have been raising
C．have raised D．had raised
As far as I know, he is seldom, ______, absent from school.
A．if any B．if so C．if ever D．if not
--- Would you mind if I smoked here?
---I am afraid…, but if you________.
A．will B．must C．would D．may
