Do you think he is lazy？” “I _____ so once, but I don’t now.”
| A．may have thought | B．can have thought |
| C．may think | D．might think |
Mr Zhang gave all the textbooks to all the pupils , except _____ who had already taken them .
| A．these | B．ones | 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 |
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 |