College is _______ time when you can learn many new skills, including how to live and work with_______ people from different backgrounds.
| A．a:／ | B．／:／ |
| C．the: the | D．a: the |
He __________computer games when his parents left home. So he didn’t know where they were.
| A．is playing | B．plays |
| C．played | D．was playing |
She promised that she could finish the work by ___________.
| A．her | B．herself | C．she | D．hers |
When our parents are not at home, we need to ______ ourselves.
| A．look after | B．look at |
| C．look up | D．look around |
The volunteers kept on searching for the missing people in the earthquake, _____they were hungry and tired.
| A．because | B．but | C．although | D．so |
--- Shall we take a bus to the library?
--- It’s not far. I think we________ take a bus. Let’s walk there.
| A．mustn’t | B．couldn’t |
| C．can’t | D．needn’t |