7. in a low/ loud/ weak voice　 / in low/ loud/ weak voices

6. audience

5. busy ---- business ---- businessman / businessmen

4. succeed (v) ----success (n.) ---- successful (adj.)---- successfully (adv.)

3. organize (vt.) ---- organization ---- organizer

2. raise / collect money for sb.　 /　 donate money to sb.　 donation(s) (n.)

1. wish (sb.) to do sth. / wish (that)+从句 / wish sb. sth.

hope to do sth. / hope (that) +从句

21. introduce (vt.) introduce sb. to sb. ----introduction (n.)　

instruction(s)　 /congratulation(s)　 / produce (vt.) ---- producer (n.)

8B Unit 4

20. simple / easy (adj.)---- simply (adv.)

19. include (v.) / including (prep.)