Giải giúp mình câu 5,6,7,8,9,10

 

31 tom said to me :'Do you like living in the countryside'

-> Tom asked me………………..

32 I have no idea I should take that English test

-> I have no idea……………………….

33 when did your parents build this wordshop

-> When did your parents set ……………………….

34 They moved to the city five years ago but they still remember living in a small town

-> Athough……………………
35. Living in a big city is more convenient than living in a village.

→ ....................................................................................................................................................

Đốt cháy hoàn toàn 46 gam natri trong bình chứa oxi thu được 12,4 gam natri oxit Na2O.Tính khối lượng oxi tham gia phản ứng? 

Giai bài này giúp em với ạ.