It’s 8 o’clock. The students _________ an English class.
| A．have | B．having | C．is having | D．are having |
---- There’s no light on. ---- They ________ be at home.
| A．can’t | B．mustn’t | C．needn’t | D．oughtn’t to |
________ around the Tian An’ men Square, the tourists from Iceland were taken to visit the Palace Museum.
| A．Showing | B．Having shown | C．Being shown | D．Having been shown |
---- I’ll come to see your performance at 9:00 tomorrow evening.
---- But by then my performance will have ended and I ________ reporters in the meeting room at that time.
| A．will be meeting | B．will meet | C．are going to meet | D．am meeting |
Facing this ________ problem, I found myself ________ about how to work it out.
| A．puzzled; puzzled | B．puzzled; puzzling |
| C．puzzling; puzzling | D．puzzling; puzzled |
________ the Internet is of great help, I don’t think it’s a good idea to spend too much time on it.
| A．While | B．As | C．Because | D．If |