1.As soon as we arrived at the airport,we see the plane for Japan taking off.
2.The young couple were saving money,so they could pay off all their debts.
3.Because she was the elder sister,she tried to set a good example.
4.When Mary had finished writing the article,she went to bed.
5.Professor Wang spoke loudly ,because he wanted to make himself heard by us all.
6.Because her had a poor health,she did not attend the important meeting.
7.As he was a little boy,he was forced to support his family.
8.The child named Xiao Qiao,and he was from Shanghai.
9.Rubber and plastics give off poisonous gases,when they are burned.
10.As the modern agriculture and industry develop,more and more waste and poison are poured into the water,the soil and air.
一楼的2、5、8是错的,改下吧,不是复句了,变成单句了.10有错误