Present perfect continous VS. simple

[SARDORBEK]

Hello,DEAR ALAN!

a) Komil is exhausted. He has been running.
b) Your eyes are red. Have you been crying?

Instead of continuous can I use simple preserving correct grammar and meaning?
e.g.

Komil is exhausted. He has run.
Your eyes are red. Have you cried?

If I can use the simple,does the meaning change then?

Many thanks...

[Alan]

No, we would not use simple forms in these cases.

You should find information on the use of the present perfect continuous in the EFL Learning Centre.