他正处于换牙期。

He's ___losing his baby teeth.

他在比赛中逐渐失去了领先优势。

He is ___losing his lead in the match.

她总是把手机放错地方，经常找不到。

She keeps ___losing her phone because she puts it in random places.

失去孩子后，她很长时间都沉浸在悲伤中。

After ___losing her child, she remained in deep sorrow for a long time.

这家餐厅每个月都在亏钱，所以可能要关门了。

The restaurant is ___losing money every month, so it might have to close.