My brother ________ while he ________ his bicycle and hurt himself．
A.fell; was ridingB.fell; were ridingC.had fallen; had rideD.had fallen; was riding在线课程A
该题的and hurt himself具有一定的迷惑性。部分考生认为hurt与rode是并列关系，而实际上hurt与fell才是并列关系。而且由while也可判断两个动作是同时发生的。