单选题 Ms. Sierra has left ______ for his staff to follow while she is attending a convention in Hong Kong.
【正确答案】 C
【答案解析】[解析] 单词形态：名词
1．这是一道单词形态选择题，选项均为instruct的不同形式。
2．空格内应填入一个名词作空格前及物动词left的宾语。因此C．instructions为正确选项。