I wonder________there are so many natural disasters across the world in 2010.
| A．which it is that | B．what is it that |
| C．how it is that | D．why it is that |
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I wonder________there are so many natural disasters across the world in 2010.
| A．which it is that | B．what is it that |
| C．how it is that | D．why it is that |
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