题目

西气东输工程不通过的省级行政区是 (      )  A.新疆维吾尔自治区      B.甘肃省       C.青海省        D.宁夏回族自治区 答案：CLi Ming is said ______ the experiment in the lab, but I can’t find him there. A．to have doneB．to doC．to be doingD．doing