下列词语中加点的字，读音全都正确的一组是( )

A．纾(shū)难炮(pào)制大腹便(pián)便

B．屏(píng)息遒(qiú)劲未雨绸缪(móu)

C．愆(qiān)伏沙碛(qì) 强(qiǎng)词夺理

D．讥诮(qiào) 嵌(qiàn)入方枘(nà)圆凿

All the students _____two groups by the teacher during the competition.

A．were divided into

B．were divided

C．divide into

D．divided into