During World War II which is crule,thousands of people were killed.造句的意思当然是只要用到指定的词就可以了,不要太教条地以为只能用给的词.老师的意思应该是造两个句子,每个句子用到其中两个词?额既然要简单的那就,My dog is small but my friend's dogs are big./ Yesterday,I was happy about my score but my classmates were sad.够简单了haha