79. The girl left her home a few days ago. She has not come back yet.

　The girl has _________ _________ from her home for a few days.

78. There are green trees on either side of the street.

　There are green trees on _________ _________ of the street.

77. Can you show me the way to the post office?

　Can you tell me _________ _________ get to the post office?

76. They say that Mr Liu can speak German.

　_________ _________ that Mr Liu can speak German.

3． 同义句转换，每空一词(含缩写)。

75. They came to ask for help.

　_________ did they come _________?

74. We have a class meeting once a week.

　_________ _________ _________ you have a class meeting?

73. Jack has been to Hong Kong only once.

　_________ _________ _________ has Jack been to Hong Kong?

72. He went to the station to meet the twins last Wednesday.

　_________ did he _________ to the station to meet the twins?

71. He is looking for a pair of black shoes.

　_________ is he _________?