Question

We ________ for 6 years． [　　] A． has made friends B． have made friends C． have been friends D． has been friends

Answer 1

答案：C
解析：

与for连用的动词必须是表示延续的动作的，make friends对应的延续性表达为be friends，故排除A和B，主语是we，故用have而不用has。