英文点寫?? 這個email差不多3星期

Sorry for the late reply. This e-mail should have been replied 3 weeks ago but I was too lazy to check my e-mail box.

你係寫俾朋友定上司定乜野呀??
我呢個答覆比較正統, 公事上用會好D
如果係寫俾朋友...
I was too lazy to check my mails. I should have replied your e-mail for 3 weeks.

This E-mail was sent three weeks ago, I repied it late since I was too lazy to check my mailbox.

This email was received 3 weeks ago, pls forgive my laziness for not checking my mail every day & caused the late reply.

This email has not been replied for three weeks because of my laziness.

I 've received this email three weeks before, but I was too lazy to check my email so that replied you in late.