I. Rewrite
1.His pen is not the same as his pen
⇒His pen is different from his pen
2.The green hat is cheaper than the red hat
⇒The red that is more expensive than the green hat
3. Kim Van Kieu attract a lot of childrent
⇒A lot of children are attracted to Kim Van Kieu
4.Lan is taller than Nhung
⇒Nhung is not as tall as Lan/ Nhung is shorter than Lan