1、His father_____the party since 1978A.joindB.has joinedC.was inD.has been in答案：D解析：本题考查学生对现在完成时的熟练掌握。since 1978表。

1、— Is your father in?（B）No,he（ ）dufor three hours.A. was out B. has been out C. went out D. has gone out2、My broth。