Hi Andy. Thank you very very very much for you answer! I wish you all the best!!

Hi Linde, here are some corrections for your sentences. (I put the corrections in parentheses) I could (have) kissed her but all of a sudden her mother came in our room and offered a cookie she (had) just made. Let's (go) over our future tasks. (Go) over your childhood please (Tell me about your childhood) She (grabbed) the chair (he made), (which he had given to her on her birthday), and came at him (angrily). I have been learning english (for the) last two months. And I'm still that bad with it. Ever since (then) I don't listen (to) music. I don't talk with him anymore because he abused me five days ago in the shop! And there were a lot of people (around)! He took the book, which (I set) down on the table. I figure you like to clean up. (this is colloquial, it means "it seems as though you like to clean up") I really freaked out when saw her without a (hairpiece). I ate all the cookies (that) she bought for children. He had shouldn't doing this. (He shouldn't have done this? or He shouldn't be doing this?) I would like to talk with him later. Hope this helps!