chuyển các câu sau thành câu nghi vấn và hỏi :i'm an engineer;
i'm not an engineer
am i an engineer?
.thore are his pens
those aren't his pens
are those his pens?
Câu nghi vấn là câu hỏi nhỉ❔❔❔❔
I'm an engineer.
➸☛Are you an engineer❓
Those are his pen.
➸☛Are those his pen❓