I need someone to tell me what to say for my spanish test

Which part of this sentence is not correct? esta muchacha tan bonito es alta. a. muchacha b. bonito c. esta d. alta

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?

Read and select the correct option for the blank. an exchange student from mexico brings a typical food from his culture to school. after you ask, what can he say? —hola, amigo fernando. yo como el ceviche. —¿eres de méxico? —sí, soy de méxico y come la tortilla escribo la yerba mate escribe la yerba mate como la tortilla