---Did you visit the Big Ben in London?
---No, we_________ it, but we spent too much time shopping.
| A．could visit | B．could have visited |
| C．must have visited | D．can have visited |
An early typewriter produced letters quickly and neatly; the typist, _____ couldn't see his work on his machine.
| A．however | B．therefore | C．yet | D．although |
The reason why he adapted to the new situations quickly is that he has a _____ attitude.
| A．changeable | B．alternate | C．movable | D．flexible |
Motorists _____ of speeding may be banned from driving for a year.
| A．convicted | B．arrested | C．charged | D．judged |
He was not _____ to the club because he wasn't a member.
| A．allowed | B．admitted | C．permitted | D．approved |
He is a very honest official and never _____ any gifts from the people who sought his help.
| A．accepted | B．received | C．carried | D．excepted |