_______ she was standing and waiting for a bus that she caught sight of the former President Clinton.

A．It was while

B．As soon as

C．While

D．During the time when

企业发生分立、合并和联营等变更后，凡毋须重新进行法人登记的企业原有资金账簿，已贴印花税票继续有效。 ( )