Question

Today he .........(speak)at length.in present tense

Answer 1

Answer:

speaks

Explanation:

Today he speaks at length

that is for present tense

Answer 2

Answer:

is speaking

Explanation:

Today he is speaking at length.

Since only Present tense is mentioned, not what kind of present tense, so we have used Present Continuous Tense.

We can also answer it like this :-

Today he has been speaking at length.

I think both are correct answers.