-You must be excited about going to Japan for schooling.
-_________，but I’m afraid I can’t do well because my Japanese is poor.
| A．Never mind | B．Well，I ought to |
| C．I don’t know yet | D．Certainly not |
“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 |
“Why didn’t she come to the meeting yesterday?” “I’m not so sure. She ______ ill.”
| A．should be | B．should have been |
| C．must be | D．might have been |