Which sentence from paragraph $2$ helps the reader understand the meaning of "shifts"? "Very often out of an old dyed dress, out of bits of tulle, lace, plush, and silk, costing nothing, perfect marvels were created, something betwitching $$ not a dress, but a dream." "From the dressmaker's Olga Ivanovna usually drove to some actress of her acquaintance to hear the latest theatrical gossip, and incidentally to try and get hold of tickets for the first night of some new play or for a benefit performance." "Then between twelve and one she drove to her dressmaker's." "When she got up at eleven o'clock every morning, Olga Ivanovna played the piano or$,$ if it were sunny, painted something in oils."