We found some _______of rice near the hole . The mice may have stored a lot of____in the hole.
| A．grain;grain | B．grain;grains | C．grains; grains | D．grains;grain |
The student will be suspended from school _____ he apologizes to his desk-mate before the class.
| A．even | B．when | C．unless | D．once |
The small fishing village has ______ into a modern city in thirty years.
| A．extended | B．existed | C．explored | D．expanded |
Mr. Keller ______ forty cigarettes a day until he gave it up.
| A．had smoked | B．smokes | C．have smoked | D．smoked |
--- Do you know that man?
--- Not really, just a nodding _______.
| A．acquaintance | B．participant | C．relation | D．frequent |
Please remember _____ wins you respect is not your background but your knowledge and virtues.
| A．that | B．what | C．which | D．where |