【正文】
____often smiles. 8. Zhao Na threw the schoolbag on the sofa.(改為被動(dòng)語(yǔ)態(tài) ) The schoolbag________ ________on the sofa by Zhao Na. 9. I think that it is necessary to learn an instrument.(改為簡(jiǎn)單句 ) I think________ ________to learn an instrument. 10. The reporter asked Lingling, “How serious is the food safety problem? ” (改為間接引語(yǔ) ) The reporter asked Lingling________ ________the food safety problem________. are running who/that was thrown it necessary how