____medicine works in a human body is a question ____ not everyone can understand fully.
| A．How; that |
| B．That; which |
| C．What; which |
| D．What; that |
—What is your favorite ______ of sports clothing?
—Nike.
| A．equipment | B．amusement | C．star | D．brand |
When I got back home I saw a message pinned to the door ____’’Sorry to miss you; will call later.’’
| A．reading | B．reads | C．to read | D．read |
When the dog attacked me, I _________ myself with a stick.
| A．prevented | B．supported | C．rescued | D．defended |
Most of the artists ______ to the party were from South Africa.
| A．to be invited | B．invited | C．being invited | D．had been invited |
I was just talking to Margot when Jackson ____.
| A．cut in | B．cut down | C．cut off | D．cut up |