77. 插队是粗鲁的。

It's before others.

76. 这架飞机被当作培训中心使用吗？

the plane ?

75. 1 don't know what I should prepare for the party.（改为同义句）

I don't know what for the party.

74. We911 hold the discussion at the meeting room.（改为同义句）

The discussion will at the meeting room.

73. He is too weak to walk any further.（改为同义句）

He is not to walk any further.

72. He is clever. He can solve the problem on his own.（改为同义句）

It is him to solve the problem on his own.

71. Simon made his dog run around the table.（改为同义句）

Simon's dog was run around the table.

70. Some volunteers were chosen to be (interview) to do the survey.

69. Hans has lived in England for over a year,so he is used to (drive) on the left now.

68. Because of the (medicine) treatment,a lot of people were saved.