—Where is Jack?I can’t find him anywhere.?

—He__________ his homework upstairs.?

A.might have done                             B.must have done?

C.must be doing                                 D.must do?

—Excuse me, where is Johnson?

—He cannot go home, as his book is lying __________on his desk.

—Where is Bob? I cannot find him anywhere.

—He        have been off long. I heard him make a call just now.

A. shouldn’t      B. can’t           C. mustn’t        D. needn’t

  First Frenchman: I once heard someone shout, "Look out," I put my head out of a window and a basin of water fell on me. It seems that "Look out" may mean "don‘t look out."
　　Second Frenchman: Once I was on a ship and heard the captain shout, "All hands on deck," I put my hands on the deck and someone walked on them.
　　Third Frenchman: I once visited an English friend early in the morning and the maid who came to the door and said, "He’s not up yet. Come back in half an hour," When I went again for him, she said, "He‘s not down yet."
　　"If he’s not up and he’s not down, where is he?" I asked.
　　She said, "He’s still in bed. When I say ‘He’s not up ’ I mean ‘he has not yet got up’. When I say ‘He’s not down ’ I mean ‘he has not yet come downstairs,’"
【小题1】"All hands on deck" means “ _______ ”.

—Where is Bob? I cannot find him anywhere.

—He        have been off long. I heard him make a call just now.

A. shouldn’t      B. can’t           C. mustn’t        D. needn’t