1.This house is big.

These houses are big.

2. Is it your pen? - Yes, it is.

Are these them pens? - Yes, they are

3. Is this cough school? No, it isn't

Are these coughes school? No, they aren't

4. That room isn't smalll

Those rooms aren't small.

5. What is that? It's an eraser

What are those? Those are erasers

Đề lạ nhỉ? có S + O à =))

ta có nếu ghép hai số hạng lại với nhau thì có tất cả 50 nhóm

=(-1+2)+(-3+4)+(-5+6)-....+(-99+100)

=1.50

=50

Ho Chi Minh city is the biggest city in Viet Nam. There are a lot of special things here. The first, there are big buildings here. The second, the food here are so delicous, I have ever eaten there. The third, the people here are so friendly, they often help the poor, homeless people. The last I know, the air here are so polluted because there are many industrial parks and dust from the transport, so we need help the nature to clean it.

Chị ấy bận học ấy. Có gì chỉ online thì mình báo cho nhé.

\(\pi\approx3\approx3,1\approx3,1416\)

Mình làm ở dưới rồi nhé. Bạn kéo xuống là thấy =)