Yea change the #8,#9 to “Estoy”
Change #10,#11 to “Es”
Change #12 to “Esta” and #13 to “Estoy”
I don't know the first one but the second one is "pierde:
I believe descubrámoslas is correct
The 3rd one has a mistake in were it says piensaba el taxista correct answer is "pensaba que el" the rest of the sentence is correct.
The rest is correct.
Hv a good day.