Correct answer in English: They ... each other since 1992.

[Vtornik]

Would you help me to choose the correct answer in:

6. Do you know __________ here?

a) some b) any c) somebody d) anybody

8. Our baby ______ walk in a few weeks.

a) can b) will be able to c) have to d) may
10. How much money do you spend _____ food each month?

a) at b) on c) for d) to

13. They ______ each other since 1992.

a) know b) knew c) had known d) have known

14. I _______ for you for half an hour.

a) am waiting b) have been waiting c) wait d) waited

[InsaneMetal]

[Vtornik]

Thanks a lot for the help.
I am trying to learn and trying to get answers for a test.