双方已同意进行谈判。

The two sides have agreed to ___engage ___in talks.

倡导者和反对者就此事进行了激烈的辩论。

Advocates and opponents have ___engaged ___in a hot debate about the issue.

鼓励学生参与课外活动。

Students are encouraged to ___engage ___in extracurricular activities.