21.There were________fish in the river in South America.

　　A.in danger B.danger

　　C.dangerous D.dangerless

　　22.The letter b in the word doubt is________.

　　A.sound B.silent

　　C.silence D.sounded

　　23.The child looked at me________.

　　A.stranger B.strangely

　　C.strange D.strangeless

　　24.The black people were against slavery and fought for their________bravely.

　　A.free B.freely

　　C.freedom D.frees

　　25.What you said sounded________ but in fact it was untrue.

　　A.reasonable B.reasonful

　　C.reasonless D.unreason

　　26.We have to learn________technology from other countries.

　　A.advance B.advancing

　　C.advantage D.advanced

　　27.The children live in a village ________.They come here almost every day.

　　A.nearby B.near

　　C.nearly D.near by

　　28.Mr Black is an ________in the army，not an________in the government.You can not easily find him in his________.

　　A.official；officer；office

　　B.officer；office；official

　　C.official；official；official

　　D.officer；official；office

　　29.You"d better give up smoking if you want to keep ________.

　　A.health B.healthy

　　C.healthily D.healthier

30.________ speaking，I didn"t do it on purpose.

A.Honestly　B.Honest C.Honesty D.Dishonest