The farmers grew worried. Clouds were forming over the mountains- They hoped a wind would blow the clouds south. (compound-complex sentence)
【正确答案】：When clouds were forming over the mountains, the farmers grew worried, and t hey hoped a wind would blow the clouds south.
【题目解析】：并列复合句就是至少用一个并列连词和一个从属连词将三个或是三个以上的简单句根据其内在逻辑连接到一起。本题采用并列连词和从属连词连接的方法，把三个简单句连接成一个并列复合句的方法来完成。