他喝了一大口水，艰难地咽下了药片。

He took a big gulp of water to help ___swallow the pill.

她很难接受这个坏消息。

She found it hard to ___swallow the bad news.

那只燕子正在树枝上休息。

The ___swallow is resting on the tree branch.

她不得不忍住眼泪，强装镇定。

She had to ___swallow her tears and pretend to be calm.