I believe the answer would be lloviznando, because it makes the most sense.
Use google translate it helps. your welcome
Answer: The form of "ser" that completes the sentence provided is "es".
Explanation: The sentence provided can be translated as "Javier ____ student". Therefore,<u> as the sentence is referring to a permanent state, the verb that fills in the blank is "ser".</u> At the same time,<u> "ser" needs to be conjugated into the third person singular because the subject is "Javier", </u>which can be replaced with the third person pronoun "he". <u>The third person singular of the verb "ser" is "es"</u>. Therefore, the form of "ser" that fills in the blank is "es".
The books? not really sure what singular means but estos libros means the books'
Answer:
1. chica
2. internet
3. ocho
4.una
5. amiga
6. una impresora / a printer
7. descargar
8. soy
9. ...
10. teclado
11. números/ diez y nueve
13. transporte
14 diez
15 es
17 profesora
18 trece
20 la silla