Составить 7 предложений с by, in, for, on , to with , without и глаголами с окончанием на ing

1) You can help your mum by doing choirs 2) She found her happiness in helping needed people 3) Here you can watch a tutorial on making cupcakes 4) I'm looking forward to meeting with you 5) Without doing your homework you won't get smarter 6) I want to apologize for breaking the vase 7) She is teaching to make pupils smarter