我谨代表班主任和全班同学对各位的到来表示欢迎 用英文怎么说？15分钟内要答案！

May I welcome your arrivals on behalf of the whole class .

I sincerely extend welcome on behalf of the teacher in charge and all personnel schoolmate to everybody's arrival!

I, on behalf of the class teacher and all my classmates welcome your arrivals.

I, on behalf of the class teacher and the whole class to welcome the arrival of

I welcome the arrival of all of you on behalf of our headteacher and all of my fellow classmates.

都是机译的，以上！