Idioms exist in every language. They are words or phrases that aren't meant to be taken literally. For example, if you say someone has "cold feet," it doesn't mean their toes are actually cold. Rather, it means they're nervous about something. Idioms can't be deduced merely by studying the words in the phrase.
What does the idiom, "it's raining cats and dogs" mean?
We can collaborate on the project together.
These artifacts are from the Neolithic Era.
Teacher, may I please use the lavatory?
If the structure isn't built right, the ceiling could collapse!
What is the isotherm on the map?
The medicine will help alleviate the pain.
I am assuming that this question is asking you to correct this sentence. Here is the revised sentence: "You forgot that you took my blanket too."