exercises on grammar

1. My aunts earnings are/is very low
2.My parents wouldn't let me (to go/go) to piano lessons so i taught (me/myself)
3.She always arrives half an hour late,(who/which) makes me mad.
4. the concert was a sell-off,sell out, sell-up two days after it was announced
5.Once i (tidy up) my room I (begin) reading this book
6. He has absolutely no hesitation___ recommending her___the job(use prepositions)
7.I (not take) what he says at face value if I(be) you.

My version.
1. are (because its a plural noun)
2. wouldn't let me go , (used as an expression) , myself(not sure wny)
3. which because its a thing
4.sell out
5. once i tidy up my room, i will begin reading this book, not sure
6.He has absolutely no hesitation___ recommending her FOR the job(use prepositions)
7. I would not take what he says at face vale if i were u