Completing all the homework by the dinner, John felt very tired. He __________all day long.
| A．was studying | B．studies | C．has studied | D．had been studying |
______from space, the earth with water _______70％ of its surface looks like a “blue blanket”.
| A．Seen; covered | B．Being seen; covers | C．Seeing; covering | D．Seen; covering |
The colorful design _______ sixty candles and a flag will appear on the People Square on October 1.
| A．consists of | B．consisted of | C．to consist of | D．consisting of |
In copying this paper, be careful not to _______ any word.
| A．leave behind | B．leave aside | C．leave off | D．leave out |
Who ________ a theory about black holes?
| A．put forward | B．put down | C．put away | D．put off |
---How about your journey to Mount Emei?
---Everything was wonderful except that our car ________ twice on the way.
| A．slowed down | B．broke down | C．got down | D．put down |