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 "cumpleañero."

A.) true
*B.) false

I don't have the first two answered.

Thank You

To answer the first question: "The stem-changers in the current section are similar to those in the previous section except these stem-change 'o' to 'oe'."

To determine whether this statement is true or false, you need to understand the concept of stem-changing verbs and compare it to the information given in the sentence. Stem-changing verbs are a type of verb that undergo a vowel change in the stem when conjugated. In the previous section, you encountered stem-changers, and now you are being told that in the current section, the stem-change involves changing 'o' to 'oe'.
So, to answer this question, you can infer that the statement is true since it states that the stem-change in the current section is similar to those in the previous section, but with the specific change of 'o' to 'oe'.

To answer the second question: "Of the following, which is not a stem-changing verb?"
To determine the answer, you need to identify which of the options given does not belong to the category of stem-changing verbs. Stem-changing verbs are the ones that experience a vowel change in the stem when conjugated. Therefore, to find the answer, you need to check each option and see if it undergoes this type of change:
A.) almorzar - This is a stem-changer, as it changes 'o' to 'ue' in some conjugations.
B.) comer - This is not a stem-changing verb, as it does not undergo any vowel change in the stem.
C.) volver - This is a stem-changer, as it changes 'o' to 'ue' in some conjugations.
D.) contar - This is not a stem-changing verb, as it does not undergo any vowel change in the stem.
E.) poder - This is a stem-changer, as it changes 'o' to 'ue' in some conjugations.

Based on the analysis, the answer is B.) comer, as it is the only option that does not undergo any vowel change in the stem.

I hope this helps! Let me know if you have any further questions.