___example of how to work out the maths problem was given by the teacher
| A．The number of |
| B．A number of |
| C．Lots of |
| D．More than one |
I'll bring some medicine just some of us get sick while travelling．
| A．As if | B．in case | C．even though | D．as long as |
—Have you found the missing?couple in the mountain ?
—No, but we hard to get in touch with them．
| A．have tried | B．have been trying |
| C．had tried | D．had been trying ． |
The average temperature in．Tibet has risen0.32 degrees centigrade every decade since 1961, according to the China Meteorological Administration,．
| A．to | B．at | C．by | D．in |
—On which day shall we go outing in the Qiagling Mountains, Friday, Satutiby or Sunday?
— is all right.
| A．Either | B．Both | C．All | D．Any |
The survery shows that if people cannot afford house, they will feel less content about ___life．
| A．the; the | B．a; / | C．a; the | D．/; the |