问题补充:
--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
答案:
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。