第20题: [单项选择]The ______ tree, standing in front of the small village, has lived for hundreds of years. A. hollow B. vacant C. empty D. blank 参考答案:A 答案解析:题意是:矗立在小村前的这棵______树已经活了好几百年了。[A]hollow“中空的”,符合题意。[B]vacan“空着的,未被占用的”,[C]empty“空的”,[D]blank“空白的”都不符合