He usually cuts my hair

Q. State whether true or false:
The girl who usually cuts my hair has won the lottery.
In the above-mentioned sentence, the underlined pronoun is a relative pronoun.

Q. A barber charges ₹(a + b) for each hair cut. If he collects ₹(a${}^2$ + 3ab + 2b${}^2$) at the end of the day, how many hair cuts did he do?

Q. Fill in the blank with a suitable option:
__________ I'm having my hair cut, you can do the shopping.

Q. Choose the option that best fills in the blank in the following sentence:
I must _____ my hair cut by the hairdresser.

Q. Ann: Why did you go to the hairdresser?