同桌的两人一直保持沉默，整节课都没说话。

The two classmates sat side by side, ___not talking throughout the entire class.

学生们以沉默抗议，拒绝回答老师的问题。

The students were ___not talking as a protest and refused to answer the teacher's questions.

他生气地坐在角落，一整天都不跟任何人说话。

He sat angrily in the corner, ___not talking to anyone all day.