A ella. It is the only one that goes with le.
No. The 4 is A, 6 is C and 8 is C
Andres Y Cecilia son los hijos de Javier
Rafael y Estela han caminado al correo.
That is the most exact translation, it was a <u>periphrasis</u> (conjugated verb + impersonal verb).
<h3><em><u>MissSpanish</u></em></h3>