题目内容
Livemocha. com is a free site ________ visitors can not just learn various languages but also chat online.
A．where B．which
C．that D．what
A
先行词为a free site，空格处在定语从句中作状语，因此应用关系副词where。
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livemocha. com is a free site _______ visitors can not just learn languages but also chat online.
| A．that | B．where | C．which | D．what |