Never before ________ buying a computer, but now it seems a necessity in my everyday life.
| A．did I think of | B．have I thought of | C．I thought of | D．I have thought of |
Robert is saidabroad, but I don’t know what country he studied in.
| A．to have studied | B．to study |
| C．to be studying | D．to have been studying |
The chargefrom 5 dollars to 50 dollars, depending on the quality.
| A．transforms | B．varies |
| C．trembles | D．evaluates |
--- I think a design whichall the ages and social groups is not easy to make.
---I can’t agree more with you.
| A．appeals to | B．admits to |
| C．objects to | D．sticks to |
If youyour teacher’s advice, you would not have failed the exams last week.
| A．take | B．were taking | C．took | D．had taken |
--- When did Lily’s brother finally stop drinking alcohol?
---It was in May ______ he was put into prison for drunk driving.
| A．that | B．since | C．when | D．before |