American women were _____ the right to vote until 1920 after many years of hard struggle.
181. In the hospital, there are a lot of _____.
180. There is a _____ of understanding between them. Otherwise, they will be good friends.
179. In China, the majority of men earn their living by manual ______.
178. There are four basic _____ of blood in the human body. What do you belong to, A, B, AB or O?
177. You should turn to Mrs. Green. She is the key figure in the company. The underlined part probably means _____.