"Kateřina complains that Matěj is never home."

Translation: Kateřina si stěžuje, že Matěj nikdy není doma.

[Adam887456]

Why is it wrong "Kateřina stěžuje si že Matěj neni nikdy doma."

[endless_sleeper]

si has to be in the second position. Kateřina si stěžuje...

[jaroslav995292]

proc neni at home

[BoneheadBass]

"At home" is also accepted in the CZ-to.EN exercise. "At" is not required but can be included.