[MMM]

Originally Posted by AmgedIsmail

So, is that website wrong then?
Look:
A: What will Lucy do tomorrow?
Ashita Lucy wa nani o shimasu ka.

B: Lucy will play tennis.
Tenisu o shimasu.

Look at the site.
Dialogue, Say It Out Loud - Lesson 4 - Language - Kids Web Japan - Web Japan

No the website isn't wrong. Just you need to know that "shimasu" means "to do".

shimasu = to do
tenisu wo shimasu = play tennis
sanpou wo shimasu = to take a walk
aisatsu wo shimasu = to give a greeting
shigoto wo shimasu = to work

In Japanese we don't say "play tennis" but more accurately "do tennis".