A= [n.(n+1).(n+2)-0.1.2]:3

A=[n.(n+1).(n+2)]:3

1. Ba and some of his friends have collected stamps since 1995.

2.Nam always walks to school,but yesterday he rode his new bike to school.

3.We are rehearsing the folktale''the lost shoe''. Would you like to participate in our group.

4.Ba is a new student,is very fond of being a member of our art club.

1.They are very proud about their good gradeat school

==>They are very proud of their good gradeat school.

2.The doctor asked him to not smoke

==>The doctor asked him not to smoke.

3.Nam'mother is too tired to cooking herself tonight

==>Nam'mother is too tired of cooking herself tonight.

4.They have liked in that old house in the 1990s

==>They have liked in that old house for the 1990s.

5.She asked he to write new words on pieces of paper

==>She asked him to write new words on pieces of paper.

6.I often stick paper of new words on the wall so as that learn them at any time

==>I often stick paper of new words on the wall, so that learn them at any time.

1.The YsY was on March 26th,1931.

2.It buids character and encourages good citizenship and personal fitness.

3.It encourages all members to take part in diffirent programs.

4.It is named''Green Sunday'' because it makes the city more beautiful with clean streets,plenty of trees and flowers. It gies more green color to the city and it is done on Sunday .

CHÚC BẠN HỌC TỐT NHA!!!

gà 22 con

thỏ 14 con

một người mua một sản phẩm với giá 56 000 đồng tính giá tiền lãi 20% so với tiền bán hỏi tiền lãi là 70 000 đồng

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