Charles Babbage is generally considered _______ the first computer.
| A．to invent | B．inventing | C．to have invented | D．having invented |
The famous orchestra, which was composed by the four young musicians, is _______ into four parts according to the folk songs.
| A．picked up |
| B．given up |
| C．turned up |
| D．split up |
___________ couldn’t help stopping to listen to the blind performer’s wonderful music and leaving him some ___________.
| A．Passer-bys; changes |
| B．Passers-by; change |
| C．Passer-bys; change |
| D．Passers-by; changes |
The island where these rare birds nest has been declared a _________area.
| A．observation |
| B．reservation |
| C．preservation |
| D．conservation |
As the proverb ____, an enemy in disguise is a wolf in sheep’s ____.
| A．runs; dress |
| B．says; clothes |
| C．speaks; cloth |
| D．goes; clothing |
After the quarrel, I tried all my best to fix the misunderstanding between us, but all my efforts seemed .
| A．in vain |
| B．in case |
| C．in time |
| D．in trouble |