Most computer users think it necessary for their software ________ regularly．
| A．to up date | B．to be updated |
| C．to have been up dated | D．to have updated |
According to the psychoanalyst Sigmund Freud, wisdom comes from the _____ of maturity.
| A．fulfillment | B．achievement |
| C．establishment | D．accomplishment |
. My camera can be _____ to take pictures in cloudy or sunny conditions.
| A．treated | B．adopted | C．adjusted | D．remedied |
This is the _____ piano on which the composer created some of his greatest works.
| A．actual | B．genuine | C．real | D．original |
Mr. Smith gradually _____ a knowledge of the subject.
| A．attained | B．achieved | C．required | D．acquired |
The policeman stopped him when he was driving home and _____ him of speeding.
| A．charged | B．accused | C．blamed | D．deprived |