他感冒了，整晚都在咳嗽。

He has a cold and ___coughs all night.

这台老旧发动机启动时总是发出咳嗽般的声音。

The old engine ___coughs loudly when it starts up.

她小声说出答案以免被听到。

She ___whispers the answer quietly to avoid being heard.