Please help. Thank You.

1.
The stem-changers in the current section are similar to those in the previous section except these stem-change "o" to "oe."

A.) true
B.) false

2.
Of the following, which is not a stem-changing verb?

A.) almorzar
B.) comer
C.) volver
D.) contar
E.) poder

18.

If you have a fiesta de sorpresa for someone, that person does not know about it.

*A.) true
B.) false

19.
The mother of the person having the birthday is the "cumpleaƱero."

A.) true
*B.) false

I don't have the first two answered.