THAM KHẢO:

Ms Hien is my English teacher, and she is a really lovely person. Ms. Hien is pretty young – just about 25 years old. She had studied abroad for a long time, and this is the first year that she comes back and teaches in Vietnam. She is tall and slim, and she has beautiful long black hair with bright skin. She is the belle of our school, and I know there are many male teachers that secretly admire her. Since Ms. Hien spent a long time study with foreigners, her English, as well as teaching skills, are very good. When we first had chance to study with her, we found out that our English was just at the most basic level. She has many new teaching methods, and we can see a real big progress after a while. Most of us are afraid of English, but now we are even looking forward to her class since it is always full of laughter and interesting games that relate to the lesson. Ms. Hien is such a great teacher, and I hope I will have chance to study with her next year.

\(A=\dfrac{5}{13}+\dfrac{-5}{7}+\dfrac{-20}{41}+\dfrac{8}{13}+\dfrac{-21}{41}=(\dfrac{5}{13}+\dfrac{8}{13})+(\dfrac{-20}{41}+\dfrac{-21}{41})+(\dfrac{-5}{7})=1+\left(-1\right)+\dfrac{-5}{7}=0+\dfrac{-5}{7}=\dfrac{-5}{7}\)

thế thì tick nhó

Their ... made the party atmosphere warmer 

A. friendly

b. friendliness

c. unfriendly 

d. unfriendliness

the last time I met her was two years ago

=> It's ..two years since I last met her.

mình làm chi tiết nha bn

\(\dfrac{4}{16}-\dfrac{5}{10}+2=\dfrac{20}{80}-\dfrac{40}{80}+\dfrac{160}{80}=\dfrac{140}{80}=\dfrac{7}{4}\)

Nhân dân khổ cực

Nạn đói xảy ra thường xuyên

Làng xóm nhà cửa bị tàn phá

Mất mùa, hạn hán, đói kém

1 Ạ.stopped B.performed C.fastened Đ.joined

2.a.washes b.walks c.misses d.fixes

3.a.head b.many c.bread d.great

Phải vì  1/y là phân số ko phải là 1:y nha