Englishfor English speakers
assume
Verb
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If you assume something, you think or believe something without having enough information to know that it's true.
Oh, hello. I assume you're the new student, are you?
If I saw a man dressed all in black, holding a gun, and walking toward me, I would assume that the man is really a dangerous guy and I would run away from him.
I saw your car in the garage, so I assumed you were at home.
responsibility
Noun
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A responsibility is any action which somebody trusts or expects that another person will do. Responsibilities are normally given or taken.
He took that responsibility upon himself.
Looking after that pet is a big responsibility.
for
Preposition
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shows that something belongs to something else, or has a specific function
This cake is for you.
This is a net for catching fish.
—
For is used to show the reason for something
He was angry, for he had never been called such terrible names before.
for
Subordinator
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For introduces a clause with a subject and a to-infinitive
It's not good for you to be too relaxed.