Question

Tense:

Answer 1

7- I would say " Have not had "
8- I think the option " do not have " is better fitting
10- I would say " Have now become "

hope that helps!

Answer 2

7 is did not because it was past tense.

8 is do not because ir is present tense

10 is have now become because it is talking about the progress it has made

hope this helped  :)