—May I have another chocolate?
—Yes, of course.___________.
| A．Take it yourself | B．Eat it, please |
| C．Help yourself | D．Have it yourself |
Shortly after the accident, two___________ police were sent to the spot to keep order.
| A．dozens of | B．dozens | C．dozen of | D．dozen |
Mr. Zhang gave all textbooks to all the pupils, except___________ who had already taken tem.
| A．these | B．those | C．the ones | D．the others |
Besides Tom, ________ Crosettes have two other sons, __________ of whom are all interested in making model planes.
| A．不填; two | B．不填; the two |
| C．the, three | D．the, the three |
Nobody noticed the thief slip into the house because the lights happened to__________.
| A．put up | B．give in | C．be turned on | D．go out |