The physics teacher once said that we first _____the lightning followed by thunders because light ______ faster than sound.
| A．see; traveled | B．saw; traveled |
| C．saw; travels | D．see; travels |
—What are you busy with?
—The conference _____in our city next week, as you know.
| A．held | B．will be held | C．be holding | D．to be held |
Do you really want to borrow the old room which is empty _____a broken desk and a chair?
| A．except | B．except for | C．except that | D．besides |
Just because they make more money than I do, _____ they seem to look down on me.
| A．so | B．and | C．but | D．不填 |
It is going to rain today.Take an umbrella with you to _____ you from the rain.
| A．stop | B．prevent | C．keep | D．protect |
My friend, Lucy ,can get 200 dollars more than she made _____in the primary school.
| A．work | B．to work | C．working | D．worked |