Women’s earnings are well below men’s _____ educational differences that are decreasing between the two sexes.
Before you pay a visit to a place of interest, look in your local library ________ a book about it.
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.