--- Did Mike finish _________ his work?
--- Yes, he finished it very quickly, and he did _________ work.
| A．to do; hard | B．to do; easy | C．doing; excellent | D．doing; bad |
--- Did Mike finish _________ his work?
--- Yes, he finished it very quickly, and he did _________ work.
| A．to do; hard | B．to do; easy | C．doing; excellent | D．doing; bad |
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