Question

4. There are three ___and five _____ in the room

4. There are three ___and five _____ in the roomA. American, Japanese B Americans, Japanese C. American, Japanese

Answer 1

答案是b.
4. There are three _B Americans__and five __Japanese___ in the roomA. American, Japanese B Americans, Japanese C. American, Japanese
本题考试复数。American复数是Americans， Japanese复数是 Japanese
American 英[əˈmerɪkən] 美[əˈmɛrɪkən] n. 美国人，美洲人; 美国英语; adj. 美国的，美洲的; 地道美国式的; [例句]The 1990 Nobel Prize for medicine was won by two Americans.1990年诺贝尔医学奖由两位美国人获得。[其他] 复数：Americans
Japanese 英[ˌdʒæpə'ni:z] 美[ˌdʒæpəˈniz, -ˈnis] n. 日语; 日本人，日本国民; adj. 日语的; 日本的，日本人的; [例句]Japanese firms are looking for a new breed of manager.日本企业在寻觅新型管理人才。[其他] 复数：Japanese

Answer 2

There are three Americans and five Japanese in the room. 

B. Americans, Japanese

Answer 3

选B.
Americans 复数+s
Japanese 单数复数同形