mình       

I went to the countryside to visited my granparents

=> Visit

Chợ gì yên ổn làm ăn thái hòa

We might find life on another planets.

=> Life on another planets might be found.

A=3⁴⁵⁰=(3³)¹⁵⁰=27¹⁵⁰

B=5³⁰⁰=(5²)¹⁵⁰=25¹⁵⁰

Suy ra A=3⁴⁵⁰>B=5³⁰⁰

Mrs Mai visited Ha Long Bay two years ago.

=> Ha Long Bay was visited by Mrs. Mai two years ago.

Nhân A với 5 ta được

A .5=5.(1/1.6 +1/6.11+1/11.16+....+1/496.561)

A .5=5/1.6+5/6.11+5/11.16+...+5/496.561

A .5=1-1/6+1/6-1/11+1/11-1/16+...+1/496-1/561

A .5=1-1/561

A .5=560/561

A    =560/561 : 5 =112/561

con cua xanh nhanh hơn vì con cua đỏ đã bị nướng chín rồi

2.My father can't swim.

=> I wish my father could swim.

3.They have bought this house for 5 years

=> This house has been bought for 5 years.