1、標準答案是:

Welcome

2、但是口語也可以說:

you are welcome

參考例句：

Hsin-mei said with a rueful smile, "I"ll welcome you to Chungking in the latter part of the year

Welcome home,dear Grandma!

I welcome your kind help.

You are welcome to bring your wife to the party.

You are welcome to come over to us.

"Sure, we do encourage you to come back and start an enterprise."

We rolled out the red carpet for you.

You know you are welcome to stay.

On behalf of my company, I would like to welcome you here.

" On behalf of my company, I would like to welcome you here."