There______ a number of natural mysteries in the world that even make scientists ______.
| A．exists; confusing | B．are existed; confused |
| C．exist; confused | D．exist; confusing |
I didn’t know Jane ________in Paris. How long ______here?
| A．is; does she live | B．was; has she been |
| C．has been; is she | D．were; has she come |
Whoever has a gift______ music can give us some advice.
| A．for | B．of | C．about | D．on |
Our new English teacher made a strong ______ on all of us with his humorous speech.
| A．description | B．contribution |
| C．impression | D．expression |
________matters most in learning English is enough practice.
| A．What | B．Why | C．Where | D．Which |
Peter’s jacket looked just the same as Jack’s，but it cost________his.
| A．as much twice as | B．twice as much as |
| C．much as twice as | D．as twice much as |