__ It is so late. Our son __________ be back .
__ Don’t worry . I dare say he ________ have some extra work to do.
| A．can ; must | B．will ; might | C．should ; must | D．must ; may |
When I am about to go ______a plane to go______, I often think about this.
| A．aboard/abroad | B．board/broad |
| C．aboard/board | D．abroad/broad |
What a pleasant birthday party! It is worthy_______all my life.
| A．being remembered | B．remembering |
| C．to remember | D．to be remembered |
—What about 100 yuan? That’s my final offer.
—_______ I sell it to you just at the cost price this time for your future visit to my shop.
| A．You win. | B．What for? |
| C．No comment. | D．Out of the question. |
—Will you go to Mary’s wedding party tonight?
—I’m afraid not. I _______ my brother’s.
| A．will attend | B．have attended |
| C．am attending | D．will be attending |
Lacking _______ evidence, the police couldn’t arrest the man.
| A．ordinary | B．potential |
| C．solid | D．common |