He said he had called me to return home, but I didn’t receive _________.

____can help but be attracted by the world into which he is taken by the science fiction. 

 — Would you like to go to the cinema with me this evening？— I’d like to, but I won’t be free tonight. Let’s make ____ some other day.

There isn’t ______ in the room.

_______ of my classmates could work out the maths problem because it was too difficult.