The audience were ________ by his ________ performance on the stage．
A.amazed; amazed
B.amazed; amazing
C.amazing; amazed
D.amazing; amazing
网友回答
B解析be amazed by/at“某人惊异于……”；amazing“令人惊异的”。由动词的现在分词和过去分词演变而来的形容词，凡表示“令人……的”，用来修饰说明物，事的都用动词-ing形式；凡表示“感到……的”，用来修饰说明人的都用-ed形式。