填空题 During the early years of this century, wheat {{U}}was{{/U}} seen as the very lifeblood of Western Canada. People on city streets watched the {{U}}yields{{/U}} and the price of wheat {{U}}in{{/U}} almost as much {{U}}feeling{{/U}} as if they were growers. The marketing of wheat became an increasing favorite topic of conversation. A. was B. yield C. in D. feeling