The best job is __________ that uses your skill in doing something together with your interest in the subject.
It was about 600 years ago __________ the first clock was made.
The old lady, as well as her two daughters __________ shopping every weekend.
Philips openly admitted __________ an alcohol (酒精) problem and he was not admitted __________ the drivers’ club.
__________ time went by, we grew older.
English __________ in our school for almost 60 years.