--- What has made him upset recently?--- __________ alone to face a troublesome case.
I would rather you ________ of the company when I am away.
When I arrived at home, my little son was sitting in the corner of the bedroom, _______ with many dolls.
I used to go to the gym twice a week, but I _________ time to do exercises since last Christmas.
It is known to us all that the old professor, for______ life was hard in the past, still works hard in his seventies..
_____in the library if I come here to see you tomorrow?