—How much do you know about the 3D film technology?
---A little ,Not until____the hot movie Avata____some about it.
| A．did I see , did I begin to learn | B．I saw,I begin to learn |
| C．I saw,did I begin to learn | D．did I see,I begin to learn |
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—How much do you know about the 3D film technology?
---A little ,Not until____the hot movie Avata____some about it.
| A．did I see , did I begin to learn | B．I saw,I begin to learn |
| C．I saw,did I begin to learn | D．did I see,I begin to learn |
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