I don’t know __________ or not the work will be completed on time .
The Smiths are praised ________ the way they bring up their children.
Do you think this shirt is too tight ________ the shoulders?
It was a real race ________ time to get the project done.Luckily, we made it.
A serious study of physics is impossible ________ some knowledge of mathematics.
________ a lady of her necklace, the young man was arrested on the spot by a policeman.