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 choirs2) She found her happiness in helping needed people3) Here you can watch a tutorial on making cupcakes4) Im looking forward to meeting with you5) Without doing your homework you wont get smarter6) I want to apologize for breaking the vase7) She is teaching to make pupils smarter