Подскажите ! В предложении :
Семнадцать относится к простым числам.
Чем выражено подлежащее?
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This was very interesting book.

My car is faster than yours.

Use more colours next time.

My country has the most beautiful nature.

I can't stop playing this game.

This is my favorite song.

I love sport.

Don't use bad words.

подлежащее выражено числительным