There _____ a lot of coal mines in the south, but many of them have been closed or are _____ be closed. A. use to having; about to B. used to be; to C. use to having; going to D. used to be;
Five years ago, when I taught art at a school in Seattle, I used Tinkertoys as a test at the beginning of a term to find out something about my students. I put a small set of Tinkertoys in f