1,They will buy a new bike for their son 
--> A new bike 
2,I will join your trip tomorrow he said
--> He said that 
3,The weather was awful but we could go to the cinema
--> Although the weather 
4,My house is not so big as your house
--> Your house is 
5,What about going out for dinner tonight? he said 
--> He suggested 
6,People say that he is an excellent footballer 
--> He is 
7,He was very tired,but he couldn't sleep 
--> Although he was 
8,He has been reading this novel for two weeks 
--> He started 
9,Did they finish the exercises last night? 
--> Were