_______ about wild plants that they decided to make a trip to Madagascar for further research.
| A．So curious the couple was | B．So curious were the couple |
| C．How curious the couple were | D．The couple was such curious |
30. They appeared ____ me, so I had to explain to them.
| A．misunderstanding | B．misunderstood |
| C．to be misunderstood | D．to have misunderstood |
29. The _____ of freshwater brought about a lot of difficulties for those living on the island.
| A．short | B．absence | C．lackness | D．existence |
28. The Chairman thought ______ necessary _____ Professor Smith to speak at the meeting.
| A．that; to invite | B．this ;inviting |
C．it; to invite | D．him; inviting |
27. The problem he put forward at the meeting was _____. Which one of the following is “WRONG?”
| A．worth thinking over | B．worthy to consider |
| C．worthy of being thought over | D．worthy of consideration. |
26. Don’t all speak at once! _______ please.
| A．One by one time | B．One for each time | C．Each at one time | D．One at a time |