Which of the following forms should you use when speaking to the principal of your school?

You should use the form "Ud" when speaking ti the principal of your school.

When speaking to your principal, you should always use the Usted (Ud.) form as he/she/other is a figure of respect.

The answer would be ellas (if they are both girls if not use ellos)    van a ( whereever they're going) for example: ellos/ ellas van a el cine 

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