B. Are the sentences true (T) or false (F)? 1) Mrs. Harper invited her friends to lunch. 2) The necklace was her grandmother’s. 3) They all went into the garden after dinner. 4) The detective arrived at 9 p.m. 5) There were six people in the house. 6) The windows and the door were open. 7) Tom was in the living room. 8) Ben was outside. 9) Detective Sam knew who took the necklace.