Bears_____ fat stores throughout the summer and fall to have energy enough to last them through their winter sleep.
| A．pack up | B．build up | C．bring up | D．take up |
—____busy schoolwork,the children also have to take arts,music and sports
classes in their free time.
—I wonder what they will become.
| A．Rather than | B．Owing to |
| C．Except for | D．Apart from |
How can you expect to get anything____ you never give?
| A．in case | B．even if |
| C．unless | D．when |
There are many kinds of birds in Australia,and over 140 species of snakes,many of
____are extremely dangerous.
| A．them | B．which |
| C．what | D．those |
Private cars are required to take turns off roads one out of five weekdays ____the
traffic pressure.
| A．to reduce | B．reducing |
| C．reduce | D．reduced |
There is a saying ____swimming is a good
way to keep fit.
| A．which | B．what | C．that | D．where |