他深吸一口气，然后缓慢地呼气。

He took a deep breath and then slowly ___exhaled.

这辆旧车排放出浓浓的黑烟。

The old car was ___emitting thick black smoke.

她听完坏消息后，长长地呼了一口气。

After hearing the bad news, she let out a long ___exhaling breath.