Only when _____ the painting _____ decide whether the painting is worth buying.
| A．he sees, he can | B．does he see, can he |
| C．he sees, can he | D．sees he, he can |
24. ---The last one _______ pays the meal.
---Agreed!
| A．arrived | B．arrives | C．to arrive | D．arriving |
23. Where to get the materials and how to get them ________ at the meeting.
| A．have not discussed | B．have not been discussed |
| C．has not discussed | D．has not been discussed |
22. Hurry up, _______ you will miss the early bus.
| A．otherwise | B．if | C．and | D．but |
---Shall we meet at 6:00 or 7:00?
---________.
| A．Any time is OK | B．At any time |
| C．Yes, at 6:00 | D．Well, either time will do |
At last he _____ finish the work ahead of time.
| A．could | B．was able to |
| C．could be able to | D．can be able to |