Question

you ... (not tell) the truth. How do you know that I ... (not tell) the truth? Fill the correct form of verb

Answer 1

Heyaa...

You are not telling the truth.

How do you know that I am not telling the truth?

# In both the gaps we are using present continuous tense...

Hope it helps...

And here CutieBarbie :)

Answer 2

You are not telling the truth. How do you know that I am not telling  the truth?