—Wow, you have a really good voice. I_____ you were good at singing.
—Thank you.
| A． haven’t known | B． hadn’t known |
| C． didn’t know | D．don’t know |
When I first met Doris I didn’t like her, but I ______ my mind.
| A．have changed | B．change | C．had changed | D．would change |
An air crash accident happened to the plane, ______.
| A．nobody alive | B．nobody was alive | C．and nobody alive | D．where nobody alive |
I wondered what difficulty he had _____ the plan.
| A．to carry out | B．carrying out | C．carried out | D．with carrying out |
Jack has been working hard and _____ is no doubt that he will do a good job in the entrance exam.
| A．it | B．what | C．there | D．as |
Instead of settling down and living a peaceful life, the farmers move from city to city _____ work.
| A．in search of | B．in return for | C．in honor of | D．in praise of |