73.　 You can feed the birds in the park. (改为否定祈使句)

_________ __________ the birds in the park.

72.　 That is a policeman. (改为复数)

____________ _____________ _________________.

71. There are some rubbers in our pencil-boxes. (改为一般疑问句并做否定回答)

_______ there __________ rubbers in ___________ pencil-boxes？_______, ______ ______.

70. He is from __________. (English)

69. Let me __________ in the lake. (swim)

68. Where are my socks? Oh, here ___________ are. (them)

67. The _____________ (child) are on the playground.

66. Can you see the ________(teacher)desk?

65. The ________________ (护士) in the offices are helpful.

64. How many ______________ (图书馆) are there in your school.