题文
_________, I could not memorize the text.
| A．However hard did I try | B．However hard I tried |
| C．However I tried hard | D．However I had tried hard |
推荐试卷
_________, I could not memorize the text.
| A．However hard did I try | B．However hard I tried |
| C．However I tried hard | D．However I had tried hard |
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