Half of the class _____ done most of the work ．The left _____ rather difficult．
| A．have ; is | B．has ; is |
| C．have ; are | D．has ; are |
It is much_________to do things well than do big things poorly.
A. worse B. funnier C. better
---Can you play the guitar or the violin ?
---_________. But I can play the drums.
A. Both B. Either C. Neither
--- Have you found the poor dog yet?
---Yes. But he was_________when we found him. The bad weather killed him.
A. dying B. died C. dead
By the time I got to the airport, the plane ________.
A. took off B. has taken off C. had taken off
The boss in the factory made the workers_______nine hours a day in the past.
A. work B. to work C. working