根据下列句子及所给汉语注释，写出空缺处各单词的正确形式。(每空只写一词)
66. Though you’re (熟悉) with the poem, you’ll try to learn it by heart.
67. People in Australia enjoy staying (户外).
68. His visit became less (频繁的) as time passed.
69. The doctor (表扬) our daughter for her courage this morning.
70. This football game was (播出)live on TV across Europe.
71. This company is one of the Post Office’s biggest (顾客).
72. They lived in London until quite (最近).
73. Could you (递送) this letter to the accounts department?
74. Who is to (负责) for the failure?
75.You may read after the tape to improve your (发音).