should / ought to - to say that something is a good idea., shouldn't - to say something is a bad idea., have to - to say that something is necessary., don't have to - to say that something is not necessary., mustn't - to say it is very important not to do something. ,

Bảng xếp hạng

Phong cách trực quan

Tùy chọn

Chuyển đổi mẫu

Bạn có muốn khôi phục tự động lưu: không?