Necesito 15 oraciones con can en afirmativas y 15 oraciones con can en negativas?

I can play the guitar

i can run fast

i can believe in angels

i can speak in differents languages.

I can cook a cake

i can read a book in two weeks

i can smell all the flowers

i can smile when i`am happy

i can learn math fast

i can develop a project in a month

i can watch tv and listen music in the same time

i can drink caffe in the night

i can clean my room when i want

i can sing in english

i can comb my sister.