Answer:
7. yo triago los pantalones azules
8. Rolando y yo nos ponemos las botas negras
9. Usted tiene cien anos.
10. Yo vego del cine con Carmen
Explanation:
I believe the answer is "un".
I remember taking a test like this, and I am 99% sure that was the right answer. Also, when you say it out loud, it makes more sense (If you have heard a bit of Spanish before).
I hope this helps you! I tried my best :)
como and cual if its multiple choice