Chuyển sang câu phụ định và nghi vấn (trả lời yes,no cho câu nghi vấn luôn nha) 1.My sister is a nurse 2.the table is heavy and old 3.Nam and his mother are friendly 4.my school is beautiful and large

1.My sister isn't a nurse 

Is your sister a nurse?

- No, she isn't. She is a student.

2. The table isn't heavy and old

Is the table heavy and old?

-yes, it is

3. Nam and his mother aren't friendly

Do Nam and his mother aren't friendly?

- No, they aren't

4. My school isn't beautiful and large

Is your school beautiful and large?

- No, it isn't. It's old and small.