_______ of my classmates could work out the maths problem because it was too difficult.
| A．Each | B．No one | C．None | D．Any |
--- Jim, do you have the time?
--- _______.
--- Never mind. Thanks anyway.
| A．Of course, I do. The time is 10:30 |
| B．Sure. But I’m afraid it’s too late for me |
| C．Yes, it’s half past nine |
| D．Sorry, but I left my watch home |
--John has put forward_______most challenging question for us to answer.
--Yes, it really is. I have never heard_____ harder one.
| A．the; / | B．a; a | C．/; the | D．the; the |
—What has made him upset recently?
—____alone to face a troublesome milk case.
| A．Left | B．Being left | C．Having left | D．To leave |
—Another cup of coffee? That’s your third since lunch.
—Yeah, well, I ____ all night preparing for my history exam. I can hardly keep my eyes open.
| A．stayed up | B．have stayed up | C．have been staying up | D．will stay up |
—What’s up? You look down.
—I have piles of papers ____, but I type so slowly.
| A．to be typed | B．typed | C．to type | D．being typed |