题目内容
He fell off the bike ________.
| A.while he rode | B.while he was riding |
| C.while he is riding | D.while on bike |
B
解析
练习册系列答案
相关题目
题目内容
He fell off the bike ________.
| A.while he rode | B.while he was riding |
| C.while he is riding | D.while on bike |
B
解析