Completed in three months. This is one of the experiments being carried on in our laboratory.
Being surrounded by the students, the teacher was answering questions one by one.
If I correct someone, I will do it with as much good humor and self-restraint as if I were the one ____. (CET-4 1996,6)
A) to correct B) correcting C)shaving corrected D) being corrected
句意為：如果我批評某個人，我會盡量保持幽默，自我控制，像批評自己一樣。one為代詞，后面的動詞為其修飾成分，故用分詞，而且one與correct之間是動賓關(guān)系，故用分詞被動式，答案為D。
