Bài 1:Combine the following sentences by using to infinitvie or to infintive phrase to express purpose 1.He opend the lion's cage .He intened to feed the lion 2.He left his rifle outside.He didn't want to frighten his wife 3.I took off my shoes.I didn't want to make any noise 4.I sent him out of the room.I didn't want to him to hear my conversation with Mary 5.He learned English well.He wanted his mother to be happy