How come a simple meal like this costs so much? — We have _____ in your bill the cost of the cup you broke just now. [ ]

He ______ full marks, but he was so careless as to make a spelling mistake.[ ]

Mr. Chen is a teacher and works very hard. —–_______ his wife.

Walking exercises ____ be boring at times, but on a clear sunny morning nothing could be better．

we keep our hearts open, we can experience the happiness friendship brings us.