— Why do you look so worried?
—My computer broke down and my essay ______ unfinished since.
| A．had left | B．has been left |
| C．has left | D．was left |
It is a shopping mall ______has been built in ______ used to be a school.
| A．which; where | B．that; what | C．which; that | D．that; where |
The police ______ his address and phone number in order to do further investigation.
| A．turned down | B．put down | C．left out | D．held out |
Tom was __________ a happy childhood, ______ most people would like to have.
| A．filled with; one | B．blessed with; one |
| C．covered with; which | D．laden with; which |
He had been _______ good terms with Tom, but all of ____ sudden they lost in touch with each other.
| A．on ; a | B．in ; / | C．on ; the | D．in ; a |
Imagine what today’s life would be like if Alexander Bell _____ the telephone more than 130 years ago!
| A．didn’t invent | B．wouldn’t invent |
| C．hadn’t invented | D．wouldn’t have invented |