Hardly ______asleep when someone knocked at the door.A,she had fallen B,she fell C,had she fallen D,did she fall
. -- Better get down to your work, Jack. --- _____________.
. If you use another method to solve this problem, you’ll probably ______ it.
. My hometown,_______ I spent my happy childhood, has changed a lot.
. -----Can I smoke in this hall? ----No, you can’t. If you_____ , please go to the smoking room.
. -----I’m terribly sorry to have put you through so much trouble. -----________. I know you didn’t mean to.