It is impossible.
| A．very | B．quite | C．rather | D．fairly |
The missing boys were last seen _______ near the river.
| A．to play | B．to be playing |
| C．play | D．Playing |
— I’m afraid the date for the interview doesn’t suit me.
— _______, we can make it another day.
| A．If so | B．If necessary | C．If not | D．If possible |
_______, his idea was accepted by all the people at the meeting.
| A．Strange as it might sound | B．Strange although it might sound |
| C．As it might sound strange | D．As strange it might sound |
_______ about wild plants that they decided to make a trip to Madagascar for further research.
| A．So curious the couple were | B．Such curious the couple were |
| C．Such curious were the couple | D．So curious were the couple |
_______ that he made an obvious mistake, Jeff went on with his speech.
| A．Not realized | B．Not to realize |
| C．Not to have realized | D．Not realizing |