12.　　 cause / reason / result　　

the reason why …. / the reason is that….

as a result　 / as a result of…

9A Unit 4

11.　　 how to deal with …/ what to do with…　 怎样处理…

10.　　 suffer from…

9.　　　 reply (n.) / answer　 ---- (vi.)reply to…./ answer

8.　　　 rather / very / quite

7.　　　 prove (vt.) 证明　 / improve (vt.)改善,提高

6.　　　 consider (vt.)

5.　　　 value --- valuable

4.　　　 suggest (v.) ---- suggestion(s) (c.n.) / advice (u.n.)

3.　　　 offer (vt.) offer sb. sth./ offer to do sth./ offer sb. money to do sth.