北师大2014春网络教育《专科英语一》作业3部分答案
1、
Seldom ______ to the library during his college days. he went did he go does he go he goes2、
Many students were seen ______ in the last exam. being cheating to cheat cheat cheated3、
The house ______ roof is blue has just been finished. whose which that whom4、
Who will know how to ________ the system? permit found employ operate5、
I have a _____ idea of what I want to express. generous general regular widespread
