Soon after getting off his horse, the captain appeared at the second storey windows, _________ he could see nothing but trees.
You can eat free in my restaurant _____ you like.
I suggest that he _____, or else he could make things worse.
A quarrel _____, which made him _____ his family.
He has a gift for description and makes ghost(鬼) stories _____.
The girl looked at me with a _____ expression. Maybe the problem was quite _____.