（届北京市海淀区高三下学期期中练习英语试卷）
The App WeChat provides a networking platform ______ communication is faster and easier.
| A．which | B．where | C．when | D．why |
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（届北京市海淀区高三下学期期中练习英语试卷）
The App WeChat provides a networking platform ______ communication is faster and easier.
| A．which | B．where | C．when | D．why |
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