The question of _________ English will keep on changing in the future，though most people doubt，is actually easy________.
| A．if；to be answered | B．whether；to answer |
| C．how；answered | D．what；to answer |
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The question of _________ English will keep on changing in the future，though most people doubt，is actually easy________.
| A．if；to be answered | B．whether；to answer |
| C．how；answered | D．what；to answer |
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