Mình chỉ ghi mỗi đáp án thôi nhé.Có gì sai mong bạn thông cảm.

VI: 1, You don't have to clean the house so many times a day
2, You ought not to put so much salt in the soup
3, I think we shouldn't smoke too many cigarettes
4, I think we shouldn't put the arm chair opposite the coach
5, You ought to put your money in the bank
6, I think my students shouldn't be lazy in learning
6, I think we should buy some cakes and flowers
7, You ought to go to the dentist
8, To keep medicines in locked cupboard is safe
9, It's very dangerous to play with matches
10, It's very dangerous to leave medicine around the house