Rewrite the sentences

Exercise 5: Rewrite the sentences
1.     John didn’t expect his mother to give him a valuable present. (be)
-> 
2.     He disguised in order that nobody could recognize him. (avoid)
-> 
3.     She hates it when people criticize her in public. (criticized)
->
4.     The teacher prepared the lesson to explain it to the students. (to be)
->