16.—Where is Lily, Lucy? I cannot find her anywhere. —She_________have been off long. I saw her clean the window just now.
She was told to wear flat shoes her back problem.
Jack opened the door, there_____ he had never seen before.
Each of us is likely to develop a personal for certain types of entertainment.
--- Do you love teaching, Miss He? --- I fell in love with teaching in 2000. I ________ for twelve years by this summer.
--- Why do you look so upset? --- ________, I had to take over his work.