Answer: These are the right answers:
1. hago
2. supongo
3. salgo
4. Oigo
5. veo
6. Traigo
7. hago
8. pongo
Explanation: Just to elaborate a little on the answer, it can be added that in this exercise they are asking you to select the appropriate verb, according to the information that is provided in each sentence. You need to take into account not only the meaning of the verb, but the person. They want you to distinguish basic action verbs, such as to listen (oír), to do (hacer), to place or to put (poner), to bring (traer), and to go out (salir), among others. In sentence 1, for instance, the speaker is saying that he/she never DOES his/her homework early; the other options are incorrect, since they mean "I place/put" and "He/she goes out." In sentence 2, the speaker is saying: "Ana is not at home, I GUESS she is at the gym." The other options are not suitable, since they mean "I go out" and "I have."