He can help you answer this difficult question because he is a very l　　　 man.

He was＿＿＿today, but was asked to stay for＿＿＿week.

　　A.to have returned； another　 B.returning； one moreC.returned； another D.to return； other

Nowadays, many people walk to work______ Copenhagen Conference calling for living a low-carbon lifestyle to cope with global warming．

　 A．in relation to 　　　　　　 B．in response to 　　　　 C．in addition to D．in opposition to

Many things                   impossible in the past are very common today.    

A. consider            B. considering           C. considered            D. be considered

Be a little ________ (耐心). I will be ready in a few minutes.

When I entered the room, they seemed _____ about something.

A. to quarrel 　 B. quarrelling　　 C. to be quarrelling 　 D. quarreled

—Do you think I should get a good guidebook？

—Yes，of course．_______ ，you also need a good camera and comfortable sh

A. What’s more　 B. In other words　 C. By the way　 D. All in all

I remember the writer lives in ____ west, so we should head ____ west.

 　 A. the; the 　　　　 B. the; / 　　 C. /; the　　 D. /; /

Many decided to give up but the rest of students went on climbing.