30. It was once called the Sea of Bamboo, but now only one fifth of the area ______ covered with bamboo, and sixty percent of other plants ______ taken the place of the bamboo.
| A．are; have | B．is; has | C．is; have | D．are; has |
All the citizens here strongly insist those who ________ “harmful” advertisements in the streets ________ punished strictly.
A. putting up; will be B. to put up; should be C: being put up; shall be D. put up; be
The company advertised for a secretary with ________ good command of English and ________ experience in handling office work.
| A．a; 不填 | B．the; an | C．a; an | D．不填; the |
—Thank you for joining in our conversation tonight．
— _______ .
| A．It’s my duty | B．It’s right | C．It’s my pleasure | D．It’s nice to say so |
It was the third time that she ______ to this mountain village to see the children.
| A．had come | B．has come | C．came | D．would come |
Mary is really good at taking notes in class. She can _______ almost every word her teacher says.
| A．put out | B．put down | C．put away | D．put together |