Complete the sentences with suitable prepositions.

Choose the correct option.

Jack fell [behind|on|down|for] in all his assignments after getting sick.

I fell [for|down|in|out] with my neighbours because they were always listening to loud music at night.

We tried to launch a new product, but it fell [for|through|behind|out]. Nobody bought it.

Oliver pushed the vase, and it fell [for|behind|apart|in].