53．He is a smart boy．He can answer this question 　　　　(easy)．

52．In my family, my mother is 　　　　(patient)than my father．

51．What’s happening? It’s too 　　　　(noise)outside．

50．I found a watch on the playground, but I don’t know the 　　　　(own)of it．

49．You shouldn’t wear 　　　　(ear)because you are still a student．

48．He believes his children can 　　　　(success)in the future．

47．Don’t 　　　　(worry)about your lessons．Let me help you．

46．A：Can you 　　　　(pronunciation)this word?　　 B：Sorry, I can’t, either．

45．They have made a d　　　　 　to get to the top of the mountain．

44．If you want to take something from your friend, you must first ask his p　　　　 ．