- Topic : ________________________
Most Americans were taught in school that Christopher Columbus , an Italian navigator , '' discovered'' America in 1492 . Traditionally , Columbus has been a hero to Americans . Statues of him are everywhere in the morden United States , and his name appears all over the map of the U.S Cities and streets are named after Columbus . America itself is sometimes called '' columbia '' in his honor

Add commas where necessary . change the adj clause pronoun to '' that '' if possible

[ Thêm dấu phẩy khi cần thiết. thay đổi đại từ điều khoản thành '' đó '' nếu có thể ]]

1 , The geologist who lectured at Browing Hall last night predicted another earthquake

2 , Dr . Fields who lectured at Browing Hall last night predicted another earthquake

3 , Only people who speak Russian shoul apply for the job

4 , Matthew who speaks Russian applied for the job

5 , The rice which we had for dinner last night was very good

6 , Rice which is grown in many countries is a staple food throughout much of the world

7 , I've fond memories of my hometown which is situated in a valley

8 , I live in a town which is situated in a valley

tìm n nguyên dương sao cho s(n)=1.2.3.....7 +n(n+1)(n+2).....(n+7) có thể viết dưới dạng tổng các bình phương 2 số nguyên dương

= 20100 nhen bạn

Don't forget ......................................................... John & Ann an invitation to dinner

They ......................................................... The house for a long time

I must ......................................................... my book at school

Jane admitted ......................................................... me lies

Gill is upset because she ......................................................... her job

Tom must ......................................................... in the garden . He looks tired

Paul suggested ......................................................... to the theatre , but i'd already seen the play

I ......................................................... to the supermarket for a week

Tom refused ......................................................... his sister with her homework