Why is "Čekají na něho někde" accepted, while "Oni čekají na něho někde" is not? Thanks in advance.
Is it possible to say "Čekají na něho někde"?
It is now. yes.
I gave that answer and it was accepted, but the last word corrected to "někdě". Is that correct?
No, it is wrong. Correct is někde. It should be ok now.
Why něho?
It is the form of jeho that is used with prepositions.
Thanks.
Why not jeho
See above.