句型转换
（1）He spent all day reading that novel．(改为同义句)
________ ________him all day to read that novel．
（2）I think she should talk to her friend．(改为否定句)
I________ ________she________talk to her friend．
（3）I should learn to relax．(对画线部分提问)
________should you learn________ ________？
（4）He left here after his friend came back．(改为同义句)
He________ ________here________his friend came back．