Chinese students must their hands first and then to speak in class.A. raise; riseB. raise

问题补充：

Chinese students must their hands first and then to speak in class.

A. raise; rise

B. raise; raise

C. rise; rise

D. rise; raise

答案：

(答案→)A. raise; rise

B. raise; raise

C. rise; rise

D. rise; raise

解析：句意：中国学生在课堂上必须先举手，然后再站起来开始讲话。raise举起，及物动词后接名词，rise上升，不及物动词后面不接宾语，故选A