1.What do you think of the idea?（保持句意不变）

 do you the idea?

2.It took him half a dayto clean his room.(对线部分提问)

 did it take him to clean his room?

3.I'd like to have more children's magazines in the library.（改为一般疑问句）

youto have more children's magazincs in the library?

4.She won't have a computer lesson tomorrow.（用yesterday替换tomorrow）

She; a computer lesson yesterday.

5.think,it, can, I, she, do, herself（连词成句）