问题补充:
His are very to us. We all like them.
A. friendly, friendly
B. friends, friendly
C. friend, friendly
D. friendly, friends
答案:
A. friendly, friendly
(答案→)B. friends, friendly
C. friend, friendly
D. friendly, friends
解析:第一空根据后接的be动词为are,说明friend应该为复数形式,而后一空选择的是be friendly to sb,表示对于某人···友好,故选答案为B