The two liars in the rhyme above is Jane and Jack because as you analyze the sentences above and try to connect the dots, it is Jane and Jack who are lying as the sentences goes on circles. So the two liars in the rhymes is Jane and Jack while the others are not.
Here is some I will try to do more hope this helps a bit
Mostly when youre thinking of it, it's present tense while also being future tense as well, could, meaning in the present. For example, "I could do that". More than likely your sentence is in the present
