idioms in English about learning

1. I read five novels a week. I´m a complete
bookworm.
A person who reads a lots of books.

2. I haven’t got a clue about Algebra .
I don’t know anything about it. I have no idea.

3. I picked up a few words when I visited
Poland last summer.
Learn something without trying or without
effort.

4. I had to learn the dates of kings and queens
by heart.
To memorise

5. Simon always gets good grades. He’s the
teacher’s pet.
The teacher’s favourite student

6. She knows the underground of Madrid inside out.
To know something very well

7. The question about bacteria was really
difficult. I just made a wild guess.
Give an answer without thinking about it and it
can be wrong or right if you are lucky