Что употребляется(инфинитив или герундий)в предложениях: A:Whats that man looking at? B:He seems(watch)people come into

A:Whats that man looking at? B:He seems to watch people come into the station. A:Stella claims to make a lot of money when she was younger. B:I know,but I dont think she is telling the truth. A:Karen seems to study all night. B:I know.Sne didnt even come downstairs for a snack.Инфинитив используется всегда после глагола seem