79. I go to school on foot every day. (改写为同义句) I__________school every day.

78. Mike broke the window yesterday. (改为被动语态) The window__________by Mike yesterday.

77. It is exciting news. (改为感叹句) ________________news it is!

76.　 He writes to his mother once a month. (对画线部分提问) ________________does he write to his mother?

71. ________　　 72. ________　　 73. ________　　 74. _._______　　 75. ________

66. ________　　 67.　 ________　　 68.　 ________　　 69.　 ________　 70.　 ________

75. We will have the meeting on the________(twelve)floor.

74..The boss left his office________(angry)without saying a word.

73. Doctors often tell us________(drink)more water every day.

72. Several_________(foreign) visited our school yesterday.