With the help of advanced technology, many new subway lines _______ in the past few years.
| A．built | B．have built |
| C．have been built | D．had been built |
My first summer vocation in the high school, _______I spent a fortnight on the farm, is really unforgettable.
| A．when | B．that | C．which | D．the one |
The 2010 World Expo in Shanghai is_____ to any other fair held in China this year.
| A．important | B．superior | C．senior | D．significant |
A modern city has been built in______ was a small fishing village.
| A．where | B．that | C．what | D．which |
-----Why can’t you answer my question? I gave you some tips just now.
-----Sorry. I ______a magazine.
| A．read | B．had read | C．was reading | D．am reading |
_______ in the leg made it impossible for him to walk home.
| A．Injured | B．Having injured | C．To be injured | D．Being injured |