How do you say that you would prefer if someone cleans their house (this is a use of the subjunctive tense)?
Like this: "Yo prefiero que Maria limpie la casa".
Do humans descend from chimpanzees?
No. Humans were not chimpanzees at one point. Humans and chimpanzees descended from a common ancestor that was neither a human nor a chimpanzee.
How do you finish the reading portion of the exam in time if you are a slow reader?
Practicing scanning and reading the questions before you read the whole passage come a long way in helping you answer correctly and finish in time.