---Do the Smiths live next door to you?
---No, but they________.
| A．used to | B．used to do |
| C．are used to | D．used to be |
How lucky Peter was! Some policemen arrived in time and_________ him out.
| A．failed to help | B．managed to help |
| C．succeeded to help | D．tried to help |
Boris has a good brain. In fact, I don't think that anyone in the class has________ IQ.
| A．a high | B．a higher |
| C．the higher | D．the highest |
My cousin served in the army ________ when he was ________.
| A．in 1990's; in twenties |
| B．in the 1990's; in the twenties |
| C．in the 1990s; in his twenties |
| D．in 1990's; in his twenties |
---Mum, when shall we go to the zoo?
---Sorry, I will have a meeting today. ________ Saturday ________ Sunday is OK.
| A．Not only; but also | B．Neither; nor |
| C．Either; or | D．Both; and |