Do you think it _________ to argue with them? The question is not worthy_________.
| A．worth; discussing | B．worthwhile; to be discussed |
| C．worthy; to discuss | D．worth; to be discussed |
Betty will ring me up as soon as she ______ in Beijing.
| A．arrive | B．arrives | C．arrived | D．will arrive |
The teacher requested that we ______ the classroom after using it.
| A．cleaned | B．cleaning | C．to clean | D．clean |
The moment I met you, I ______ you though I hadn’t seen you for about ten years.
| A．saw | B．recognized | C．knew | D．watched |
No one can imagine the difficulty he had ______ playing computer games.
| A．to give in | B．to give up | C．giving up | D．giving in |
You’d better ______ your scores and see if you have passed the exam.
| A．add up | B．go through | C．set down | D．come up |