30. How long do you think it will be _____ we can find a new water source?
| A．after | B．before | C．when | D．Since |
I caught the last bus from town, but Harry came home___________ that night.
| A．very late | B．even later | C．the same late | D．the last one |
We will take________ wants to go there for a sight - seeing.
| A．whoever | B．who | C．anybody | D．all that |
—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 |
My dictionary__________. I have looked for it everywhere but still
| A．has lost;do not find | B．is missing;do not find |
| C．has lost;have not found | D．is missing;have not found |