他在学校戏剧中扮演主角。

He ___acted as the lead role in the school play.

孩子们在派对上表现得非常兴奋。

The kids were ___acting really excited at the party.

医生需要立即采取行动来抢救病人。

The doctor needs to ___act immediately to save the patient.

第一幕结束后，观众们热烈鼓掌。

The audience applauded loudly after the first ___act.

这项新法案将于下个月生效。

The new ___Act will come into effect next month.