Question

【题目】They from the USA and they are friends.
A.all
B.all are
C.are all
D./

Answer 1

【答案】C
【解析】句意：他们都来自于美国，他们都是朋友。be from来自于，主语为they，be动词应为are。all应放在be动词之后实意动词之前。故选C。