Though it is a _____ job, he still devotes much time and energy to it.

A．poor-paying                                              B．poorly-paying

C．poorly-paid                                               D．poor-paid

The winter of the speech contest was a _________girl called Jenny from America.

A．18—years—old                                         B．18—year—old

C．18—year—olds                                         D．18 year old

Lin Tao, an        boy, was very brave and helped his classmates run out of the classroom when the earthquake happened.

A．8-year-old             B．8 year old              C．8-years-old            D．8 year olds

It is__________ (legal) to employ someone under the age of sixteen. （所给单词适当形式填空）

根据P46所学的知识和方框内的提示填空