句型转换根据括号内的要求改写句子，每空限填一词。（本大题共5分，每格0.5分）

小题1:The children have already visited the park. (改为否定句)

The children         visited the park        .

小题2:He had to lie in bed because he was seriously ill. (保持意思基本不变)

He had to lie in bed                   the serious illness.

小题3:She should say “sorry” to her friend. (对划线部分提问)

    should she          to her friend?

小题4:Those local businesses support the charity show. (改为被动语态)

The charity show                   by the local businesses.

小题5:They offered many books to the students in poor areas. (保持意思基本不变)

They          many books          the students in poor areas.

相邻工作段的高度差，不得超过______。

A．一个楼层的高度

B．不宜大于4 m

C．一个楼层的高度且不大于4m

D．一个施工层高度