＿＿＿! You should take this chance to attend it.
| A．How important conference is it |
| B．How an important conference it is |
| C．What an important conference is it |
| D．What an important conference it is |
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推荐试卷
＿＿＿! You should take this chance to attend it.
| A．How important conference is it |
| B．How an important conference it is |
| C．What an important conference is it |
| D．What an important conference it is |
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