79. -- ______ you ______ (receive) any letters from him recently? -- Not yet.

78. ______ Taiwan Island ______ (lie) in the southeast of China?

77. Last night, we went to the cinema and the music of the film ______(sound) sweet.

76. My parents and I live in King Street. My uncle lives in a fiat next to ______.

C)用所给动词的适当时态填空。

75. After half an hour's flying, the plane landed ______ in Nantong.

74. The policemen all said that their ______ helped them a lot.

73. Here is a ______ mouse. Was it killed by your cat?

72. Cathy often goes ______ with her friends in winter.

71. Don't stop your taxi here, driver. Look at the sign. It says "No ______".

B)根据句意找出合适的单词，并用其适当形式填入句中，每词限用一次。

70. I'm going to send an e-mail, but there's something wrong with the mouse of my ______.