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Q. |
how – their task – long – been – doing – have – they? (choose the correct sentence) |
A. | how they have been long doing? |
B. | how long have they doing the task? |
C. | how long have they been doing their task? |
D. | how long the task have been doing they the task? |
Answer» C. how long have they been doing their task? |
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