Don't use words and expressions or phrases ______ only to people with specific knowledge.
| A．being known |
| B．having known |
| C．to be known |
| D．known |
70. It was a fine day once the mist had .
| A．cleared away | B．cleared up | C．carried | D．Cleaned |
69. I have some problems. Please _____ them for me.
| A．clear away | B．clean away | C．clear up | D．clean off |
68. She her hands in delight when she heard the good news.
| A．clapped | B．clap | C．circled | D．Slap |
67. Many countries have sent up man-made communication satellites to _____ the earth, which is made possible for each household to use TV.
| A．move | B．round | C．circle | D．Go |
66. Now more and more college students _____ to go and work in the west provinces of China.
| A．pick | B．elect | C．select | D．Choose |