22. My parents live in a small village. They always keep candles in the house _____ there is a power out. (A)if(B)unless(C)in case(D)so that

28. Leonardo da Vinci (1452 - 1519) ________ birds kept in cages in order to have the pleasure of setting them free. (A)is said to be buying (B)is said to have bought (C). had said to buy (D)has said to have bought