The chair looks rather hard, but in fact it is very comfortable ____.
| A．sitting on | B．to sit on | C．sitting | D．to sit |
26. The way _______ the scientist solved the problem was different from what the other scientists were used to.
| A．in which | B．what | C．from what | D．As |
25. —This is Janine speaking.
—Janine, I want to tell you Pat _______ for London. Have you decided to see him off?
| A．left | B．has left | C．is leaving | D．was leaving |
24. Only when the meeting began _______ that he had left his papers at his office.
| A．will he realize | B．he did realize | C．did he realize | D．should he realize |
23. Lucy is going to have difficulty finding a good job _______ she graduates from a key university.
| A．as if | B．even if | C．so that | D．as usual |
22. Jack’s grandpa was ______ from the fire by his neighbors, but died soon from serious burns.
| A．rescued | B．recovered | C．resulted | D．Recognized |