想問以下幾句英文會話是否正確?

1. 幸會
Nice to meet you.

2.我先帶你去會議室
Let me take you to the conference room first.

3.你想去洗手間嗎?
Do you need/want to go to the washroom?

4.請你稍等一會,mary正過來
Please wait for a moment/second, Mary is coming.

1,幸會
Good to see you

2.我先帶你去會議室
Lets go to conference room first

3.你想去洗手間嗎?
Do you want to go to rest room

4.請你稍等一會,mary正過來
Wait a second, Mary is coming

1) Nice to meet you
2) Please follow me we're go to the conference room frist
3) Do you need to go wash room ?
4) Please wait a moment, Ms Mary is coming now