Perhaps it is true that nobody in the world knows exactly how the earth __________.
| A．came up | B．came out | C．came to power | D．came into being |
Don't be so discouraged．If yousuch feeling，you will do better next time．
| A．carry on | B．get back | C．put away | D．stick to |
—What are you busy with?
—The conferencein our city next week．
| A．held | B．will be held | C．being held | D．to be held |
—Someone might see us．
—？we are not doing anything illegal．
| A．what's up | B．what if | C．How come | D．so what |
— It is important for you to findappropriate course at college．
—I can't agree more．It'sdecision that affects the whole family．
| A．the, the | B．an, the | C．an, a | D．the, a |
A good advertisement, people attach positive meanings, can contribute to the sales of a product．
| A．for which | B．to which | C．of which | D．on which |