_________ a lot of troublesome affairs to deal with,our boss doesn't have any time to spend holidays.
I insisted __________ to see a doctor, but he insisted nothing __________ wrong with him.
He studied hard, __________ the exam.
What makes us worried is that the number of people ______to drug is ________.
The boy became fatter and fatter each day and_____ made his parents sad.
This accident was______ his driving.