while （）an efficiency test on an engine ,certain precautions should be observed.a making b to make c being made d made.thanks a lot.

An error occurred while processing the data While the teacher ---(have )an english lesson while（1）{ } 即 WHILE(1); I,while,was,down,the,walking,street,alien,an,of,out,got,UFO,the(连词成句） while （）an efficiency test on an engine ,certain precautions should be observed.a making b to make c being made d made.thanks a lot. 大学英语（3）,有谁会做?(一) 单选题 1. While he normally shies away from introducing resolutions, he made _________ in this case.(A) an exception (B) an example (C) an expectancy (D) an extemporization while（count-j） while(! while while(! while an error occurred while processing this directive怎么翻译? an error occurred while processing this directive什么意思? an unh and led error occurred while processing意思 an error occurred while trying to connect to the realserver an error has occurred while downloading the voice massage 安装时出现An error occurred while copying files怎莫办 While you are riding abike ,()(),()() the risk of an accident