Prepositions

[englishstudent]

Hi,

Is this correct?

1. My sister wrote a letter to me by the end of the last month.

I suggested using

2.My sister wrote a letter to me at the end of the last month.
Thanks

[Harry Smith]

Hi,

Is this correct?

1. My sister wrote a letter to me by the end of the last month.

I suggested using

2.My sister wrote a letter to me at the end of the last month.
Thanks

1.My sister had written a letter to me by the end of the last month.
2. My sister wrote a letter to me at the end of the last month.

[englishstudent]

Thank you Harry Smith.

[Harry Smith]

Thank you Harry Smith.

You are welcome, Englishstudent! Merry Christmas and Happy New Year to you!