French language Q&A Forum

Why is this incorrect? 

They will have been experts in their field

Elles auront été .....

When I click on 'explain this' I see conjugation of avoir in future anterior. But the question said I should use être not avoir. One of the examples given has the same construction. Why cant I use avoir? I'm confused now how to form ' will have been. Advice appreciated 

Thanks 

lol this story. 

This is how clueless I am.  At reading the sentence about the missing ring I wondered at first;  "Did he steal a ring from her?"  It took this 61 year-old a minute to grasp that he took the ring in order to get her ring-size!  (I must admit, I would never have thought of that!)  Gary 

"mais leur magie demeure avec le spectateur"

--> why cant the verb "rester" be used?

Does the past tense structure require agreement? For example, I can say:

"Il s'est fait couper les cheveux."

Would I also say:

"Elle s'est faite couper les cheveux."

I'm asking because I answered one of the test questions as "Je me suis faite brosser les cheveux" but it was marked wrong.

thanks, Scott