The house was quiet in the night, ________ the occasional coughing from my throat.

Scientists doubt wheth er it ’s ________ to regulate one ’s biological clock by drinking.

_______inthought,healmostranintothecarinfrontofhim.

Thehousewasquietinthenight,________theoccasionalcoughingfrommythroat.

________ in thought, he almost ran into the car in front of him.