Question

【题目】Sam’s uncle is kind enough to donate __________(血) to people in need many times a year.

Answer 1

【答案】blood

【解析】

句意：山姆的叔叔很善良，一年多次向需要帮助的人献血。

由语境和所给的汉语提示可知，填blood；blood不可数名词，血液，血统。donate blood：献血。故答案为：blood。