题目

 Have a careful thought of ______you are doing and tell how you fell about it. A. what            B. which                         C. that                   D. whether 答案：A甲、乙两队合修一条长2500米的公路，甲队完成所分任务的23，乙队完成所分任务的34又50米，还剩700米没有修．两队所分任务各是多少米？