问题
选择题
While riding in the street, _____________.
A．someone called me from behind
B．my bike broke down
C．I heard my name called
D．an old man knocked down
答案
答案：C
考查非谓语动词。逻辑主语应与句子的主语保持一致，前半句的意思为：当在大街上骑自行车的时候，根据一致的原则，四个选项的主语只有C项复合语境，所以选C。