— What do you think of the White House?
— Splendid. While I was studying in America, I it twice.
| A．have visited | B．had visited |
| C．visited | D．would visit |
We tried to ______ his doubts and let him tell the truth.
| A．replace | B．review | C．remove | D．rebuild |
Advertisements are a good __________ sell products or services.
| A．means to | B．way of | C．way to | D．approach to |
Violence (暴力) computer games may have a bad ____________ on children.
| A．affect | B．pressure | C．influence | D．power |
Mary is often heard ________ playing piano in the next room in the evening.
| A．practise | B．to practise | C．practising | D．practiced |
What has started as a Chicago morning program in 1984 has now turned into one of the most popular daytime chat shows ever _____ on TV.
| A．tobe seen | B．tosee | C．seeing | D．has been seen |