第四题 having可以换成had吗

第四题 having可以换成had吗 she was having more fun than she had ever had beforehad ever had before是什么语法?ever可以删吗 The young people had fun at the party .这里的fun可以换成是cheer吗? 至爱是什么意思?可以换成其他词吗?为什么这是我那民族小学段考第四页的 也就是纸船那一题 Not having received a reply,he decided to write again.可以把第一个单词换成No吗?如果不可以，请说明原因 It was not until midnight that I finished my homework 中的finished 可以换成 had finished 我非常累,因为直到半夜我才完成我的家庭作业 that 后面可以换成 had finished ,即过去完成时吗? I had a surprise party for Mary.这个句子对吗?句中的surprise 可以换成surprising吗? 问个英语语法问题哈The decision having been made,the next problem was how to make a good plan.为什么用having不用had?还有就是改为Having made the decision 做开头可以吗? 五湖四海可以换成五洲四海吗? 第四题可以用比例法吗, 第四题可以选D吗 .that he had failed in the exam 中had 可以换成was .that he had failed in the exam 其中had 可以换成was 如果不可以,请说明理由,.. We went to the zoo and had fun yesterday 中的had fun 可以换成什么? 两个空的 急求! Had the writer's money been stolen?可以把been换成was why? 第四题,可以用方程, 第四题,思路也可以! 第四题就可以了. it sped downhill ai the end of the race and its driver had a lot of trouble trying to stop it换成the可以吗had这里干什么的 trying