22. Your performance in the driving test didn’t reach the required standard -----__________, you failed.
| A．in the end | B．after all | C．in other words | D．at the same time |
“Did Jim come?” “I don’t know. He _______ while I was out.”
| A．might have come | B．might come |
| C．mush have come | D．should have come |
“Look at these tracks. It _______ be a wolf.” “Don’t be so sure. I think it _______ be a fox.”
| A．must; could | B．may; might |
| C．need; must | D．could; need |
“Show me your permit, please.” “Oh, it’s not in my pocket. It ______.”
| A．might fall out | B．could fall out |
| C．should have fallen out | D．must have fallen out |
“Is there a flight to London this evening?” “There _______ be. I’ll phone the airport and find it out.”
| A．must | B．might |
| C．would | D．can |
Why did you just sit and watch? You _______ me.
| A．could help | B．should help |
| C．could have helped | D．must have helped |