——How much is it ______? ——$ 20, I think.
| A．spent | B．cost | C．worth | D．taken |
The family is a cooperative enterprise for which it is difficult to _____ rules, because each family needs to work out its own ways to deal with its own problems.
| A．set up | B．put down | C．keep up | D．lay down |
Although he hasn't any formal qualifications, Betas _____ to do well for himself.
| A．managed | B．succeeded | C．arranged | D．convinced |
John always tries to _____ people who are useful to him professionally.
| A．develop | B．provoke | C．correspond | D．cultivate |
What a terrible experience! _____ , you are safe, that's the main thing.
| A．Somehow | B．Anyhow | C．Somewhat | D．Anywhere |
He has recently _____ chess to provide himself with some relaxation.
| A．taken on | B．taken up | C．held on | D．held up |