What is the story behind the eagle and the serpent of mexico's flag ?

Ojalá que todos mis amigos mucho éxito. a. tengan b. discutan c. discuten d. tienen

Okay so i'm taking an online spanish course (penn foster), and in the study guide, you have to create a bunch of sentences with words you've learned so far. translating, reading, and those kinds of things are fairly easy, but when it comes to making my own sentences, my brain just kinda waltz's away. anyone got any tips?

Select the word from the list that best fits the definition tu madre espera que tú en casa a las ocho. sepa hagan hable estès escríbamos