（届北京市东城区普通校高三3月联考英语试卷）
Don’t be afraid of asking for help ___________ it is needed.
| A．unless | B．since | C．when | D．although |
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（届北京市东城区普通校高三3月联考英语试卷）
Don’t be afraid of asking for help ___________ it is needed.
| A．unless | B．since | C．when | D．although |
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