The dog has a(n) _______ sense of smell while the rabbit has a sharp sense of hearing.
| A．acute | B．cautious |
| C．flexible | D．valid |
—Happy birthday!
—Thank you! It’s the best present I _______for.
| A．should have wished |
| B．must have wished |
| C．may have wished |
| D．could have wished |
Days later, my brother called to say he was all right, but ________ say where he was.
| A．mustn’t |
| B．shouldn’t |
| C．wouldn’t |
| D．mightn’t |
The children ________ lost in the woods;otherwise,they would have been at the lakeside camp as scheduled.
| A．must have got |
| B．must get |
| C．should have got |
| D．should get |
Harry is feeling uncomfortable. He ________ too much at the party last night.
| A．could drink |
| B．should drink |
| C．would have drunk |
| D．must have drunk |
We haven’t seen each other ________ a long time.
| A．through |
| B．for |
| C．in |
| D．during |