He started to learn English in 1990 and in the years ________ he kept on using it in his work.
In winter, it is dangerous to go to school with snow ______the ground.
_______ late you are, we will wait for you to come to have dinner.
_______ with her sister, Mary is even more hardworking and better at her lessons.
Most of the people attending the meeting are not _______ the project, for it costs too much.
In some places, women earn money ________ men work at home and raise their children.