某市许多区县举行了区县人民代表大会换届选举，选民踊跃投票。行使了（）

A．公民的集会结社自由权利

B．公民选择权利

C．公民的监督权利

D．公民的言论自由权

---Mary has been trained hard for the last two years.

---______ she did so well at the track and field meet yesterday.

A．No doubt

B．No question

C．No wonder

D．No problem