It won't work.________，it's a bad idea，and secondly it'll cost too much.
| A．Above all |
| B．To begin with |
| C．After all |
| D．At first |
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 |
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 ______ it .
| A．has lost ; do not find | B．is missing ; do not find |
| C．has lost ; have not found | D．is missing ; have not found |
The news about the terrible flood there greatly discouraged ______ these for a sight-seeing .
| A．us from going | B．us to go | C．our going | D．our to go |
He's unlucky , and he's always suffering _____ luck one after another .
| A．a sick | B．an ill | C．sick | D．ill |