【单选题】They have three ______________. [ ]
【单选题】----Are Mr. and Mrs. Wang living alone in the house? ----Yes, altough they have three sons, of them live with their parents.
【单选题】-Are Mr. and Mrs. Wang living alone in the house? -Yes, although they have three sons, ________ of them live with their parents. [ ]
【判断题】In America, they have three ball s every season.
【判断题】配对设计不能很好地控制非实验因素对结果的影响。
【简答题】同义句转换,每空一词。 1. We have four weeks off. They have three weeks off. We have ______ ______ week off than them. 2. John runs faster than any other student in his class. ______ ______ in his class runs fas...