56. We all know that postage stamps are used to _______ (send) letters.

C)根据短文内容，从下面方框中选择适当的词组填空。

Do you really 　57　 　your parents? Hearing this question, most children give a quick answer “Of course, I do.” But maybe you don’t. It is true that all parents can remember clearly when to celebrate their children’s birthdays. However, Only　 58　 children know exactly when their parents’ birthdays are. Most parents can easily name their children’s favourite food 　59　 , but some students don’t know what their parents like most 　60　 . If you love your parents, let them feel your love. Give them a birthday gift on their special day, help them　 61　 as often as possible. Don’t always say things against your parents. Talk with them often and understand their feelings more.

55. This may be my _______ (nine) time to visit Nanjing.

54. With my sports shoes on, I could walk more _______ (comfortable).

53. Lucy is not a child any longer. She can look after _______ (she).

52. Can you see two _______ (monkey) fighting for food under the tree?

51. We hope the weather will be fine, but it is getting even _______ (bad).

50. We can finish the work faster if we have more _______ (帮手).

B)根据句子意思，用括号中所给单词的适当形式填空。

49. Tom’s ______ (到达) made all of us very excited.

48. The number of wild animals is getting smaller because of the ______ (丧失) of their living areas.

47. It is said Millie has already ______ (成为) a popular dancer in Australia.