他把帐篷的绳子固定在木桩上。

He secured the tent rope with a wooden ___peg.

政府决定将电价固定在每度0.5元。

The government decided to ___peg the electricity price at 0.5 yuan per kilowatt-hour.

她以头疼为由取消了会议。

She used a headache as a ___peg to cancel the meeting.

小提琴手正在调弦以保证音准。

The violinist is ___tuning the strings to ensure perfect pitch.