题目内容
_____ of their bad habits, the boys switched from being dependent on their parents to _____ for others.
| A．Having rid; sacrificing | B．To rid; sacrifice |
| C．Rid; sacrificing | D．Having been rid; sacrifice |
C
解析试题分析：句意：摆脱坏习惯后，男孩们从依赖父母的人变成了可以为他人牺牲的人。第一空需要非谓语动词做状语，the boys和rid是被动关系，要用过去分词rid， switch from…to... （从……转向……）中to是介词，后跟doing。所以选C。
考点：考查非谓语动词
阳光课堂课时作业系列答案Mr. Smiths was busy writing a story, only ______ once in a while to smoke a cigarette.
| A．to stop | B．to have stopped | C．being stopped | D．stopping |
When I opened the door, I found my father sitting in his chair, completely _______ in the humorous stories he was reading.
| A．absorbed | B．applied | C．attracted | D．addicted |
To my surprise, I hurried to the lecture hall only ______ that the lecture had been cancelled.
| A．to be informed | B．being informed | C．to inform | D．informing |
He got well-prepared for the job interview, for he couldn’t risk the good opportunity________.
| A．losing | B．being lost | C．to be losing | D．lost |
_______ on rescuing her sick son, the poor mother has been working 16 hours a day.
| A．To bend | B．Being bent | C．Having bent | D．Bent |
The salesman scolded the girl caught ____ and let her off．
| A．to have stolen | B．stealing | C．to steal | D．to be stealing |
by the thunder, the little girl dare not sleep in her bedroom.
| A．Frightened | B．Frightening | C．Having frightened | D．Being frightened |
An official is said _______ fire to a camp in the field, _______ one death and two injuries.
| A．to set, causing | B．to have set, causing | C．to have set, caused | D．to set, caused |