---______ he managed to solve the problem?
---Oh，he turned to Professor Lee for advice.
| A．Was it how that |
| B．Was it that how |
| C．How was it that |
| D．How it was that |
相关试题
It is required that the students mobile phones in their school, so seldom them using one.
| A．should not use; you will see | B．don't use; will you see |
| C．not use; will you see | D．not use; you will see |
— Could you please wait for a while? 
— . I'm not in a hurry.
| A．Leave me alone | B．Take your time |
| C．Do as you like | D．You're welcome |
. Our club, which I mentioned just now, is open to all, age or sex.
| A．instead of | B．in place of | C．in case of | D．regardless of |
He kept smiling secretly and we were all wondering that made him so happy.
| A．how it did | B．what he did |
| C．how it was | D．what it was |
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