Berners-Lee ________ the idea of the World Wide Web in 1989 while working in Switzerland.
| A．caught up with | B．came up with |
| C．looked forward to | D．put off |
Victor apologized for __________ to inform me of the change in the plan.
| A．his being not able | B．him not to be able |
| C．his not being able | D．him to be not able |
Not only Jack but also his parents ________ the home accident.
| A．is to blame on | B．are to blame for |
| C．is blamed for | D．are to be blamed for |
What a pity! Considering his ability and experience, he ___________ it better.
| A．need have done | B．must have done |
| C．can have done | D．might have done |
The Tower of London is _______ the Church tower.
| A．twice high than | B．two times high as |
| C．three times the height of | D．twice as higher as |
_____________ many times, the problems were settled at last.
| A．Having discussed | B．Being discussed | C．To be discussed | D．Discussed |