1.Today too many young people are_____on their parents.

a.dependent
b.relative
c.missed
d.worthwhile

2.My son is being extremely_____smoke, would you mind smoking outside?

a.sensitive of
b.sensitive to
c.sensible of
d.sensible to

3.She has such a bad cold that she lost all_____of smell.

a.sensitivity
b.means
c.sense
d.power

4.As a result of his____work with Loins Armstrong in the late 1920s, Earl Hines has been called the father of modern jazz piano.

a.professional
b.excellent
c.diligent
d.pioneering

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解析：

1.答案选a.be dependent on 依赖，依靠，relative比较的，相对的,relative to 关于.
2.答案选b.sensitive to敏感的，易受伤害的.
3.答案选c.sensitivity灵敏，means意思，sense感觉，power能量.
4.答案选d.professional专业的，excellent卓越的，diligent勤奋的，pioneering先驱的.

1.In his speech he____the importance of education by giving full details of the most serious problems caused by the educational system.

a.talked about
b.reported on
c.dealt with
d.dwelt on

2.I don’t want to get_____the quarrel between Tom and Mary.

a.in touch with
b.combined with
c.involved in
d.engaged in

3.The man escaped by____a security guard.

a.pretending to be
b.imitating
c.disguising himself as
d.duplicating

解析：

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解析：
1.答案选d.dwelt on”详细讲述”，deal with”涉及”，由full details可知选d.
2.答案选c.involved in”陷入”，所以选c.
3.答案选c.pretending to be”假装是”，imaitating”模仿”，disguising himself as”把自己伪装做….”，duplicating”复制”.所以选c.