Zhang Hua is very young. He can't join the army(改为同义句）注：两句
Lesson Ten is more difficult than Lesson Nine.(同上）注：两句
Spring is the best season of the year.(同上)注：两句
Sandy is ten. Millie is twelve.(同上)注：两句
This picture is not the same size as that one .(同上)注：一句
Tom is as old as l.(同上)注：一句