Occasions are quite rare ________ I have time to spend a day with my kids.
I prefer studying English at home ______the match.
We can’t use the machine now, for it _______.
To her surprise, the life she had been looking forward to ________ to be unpleasant.
My advisor encouraged ______ a summer course to improve my writing skills.
In fact, is really a hard job for the police to keep order in an important football match.