--What did the teacher say just now?
--- The teacher told us our hands before the questions.
A. to rise; answered
B. rise; answering
C. to raise; answering
D. raise; answered
网友回答
A. to rise; answered
B. rise; answering
(答案→)C. to raise; answering
D. raise; answered
解析：句意：老师刚才说了什么？——老师告诉我们，在回答问题之前举手。不定式做宾语补足语表示具体的将要进行的动作，动名词作宾语，表示抽象动作。结合语境可知前文是不定式做宾语补足语。下文before是介词，后面接名词或者动名词作宾语，故选C。