108×100+94×200 trên 74×76+252×38 36×48+18×104 trên 12×24+36×42 Giúp mik nha chữ"trên" là dấu gạch phân số

help..............................

help..............................

giúp...............................................

1 Everything is ready for our meal. All the dishes (just/ cook )_____by my mother 2 It was not until 1980 that he (begin)______ to learn english 3 " I dont know how to use this fax machine"- "It's quite easy. I (show)_____you" 4 she phoned( invite)_______ me to the party 5 Everything is ready for your lesson. The board ( clean) _______ and all the students are waiting for you 6 It was not until he was 30 that he(know)_______ how to swim 7 "What would you like to eat?"- " I (have)_____ a sandwich, please " 8 My father didn't have time (read)______ the newspaper

vì sao chữ quốc ngữ tùy dễ học những không có điều kiện phổ biến trong thời kỳ này

In about 140 words, write a paragraph about your favorite subject in your high school.

N vẽ mik mấy em chibi nèo Nữ nhé vì mik là nữ

Phân tích thành nhân tử: ($x^{2}$ + $x$)($x^{2}$ + $x$ + $1$) - $2$

How to reduce air pollution - using public buses or bicycles - not leaving of garbage - putting different kinds of waste in different places - keeping personal hygiene and public health - using solar energy instead of coal, gas and oil