【题目】I was on the point of speaking my wife stood up and stopped me.
A.sinceB.asC.whenD.while
在线课程【答案】C
【解析】
考查固定句型。句意：我正要说话时，我妻子站起来阻止了我。A. since既然；B. as因为；如同；C. when当……时候；D. while然而；当……时候。根据固定句型sb. be on the point of doing sth. when…“某人正要做某事，突然……”。故选C。