Correct preposition with container

Question

Help me please choose right preposition:

• Place in container.

• Place at container.

When you need to place something inside the container.

I aways have problems with prepositions, can you explain me please, how to use it correctly?

Answer 1

You just answered yourself - inside the container! So, what did you use there? 'in.'

When unsure, look up in some dictionaries. I use OALD, Collins and Cambridge. Check the examples and you'll surely learn it.

A couple for you -

Food will last longer if kept in an airtight container. (OALD)
Biscuits will stay crisp if you keep them in an airtight container (Cam).