<span>Él es un compañero de clase is the right answer. The 1st sentence is ella but </span>compañero should be compañera. In the second one ella should not have an accent mark and in the last one el doesn't match with una.
For which ones?
do you want translation on???
The History of Mexico (La Historia de Mexico) was Diego Rivera's most famous fresco (mural) in the National Palace, I believe. I think that work is what this is referring to.
i hooe you get the answer
1.me
2.nos
3.le
4. le
5.les
6.les gusta
7. me aburren
Any questions just ask :)