－The Greens are not here. If you need help, you should .
－Sure.
A. call him up
B. call up him
C. call them up
D. call up them
网友回答
A. call him up
B. call up him
(答案→)C. call them up
D. call up them
解析：此题考查两个知识点。The Greens表示一家人或夫妇二人作主语时谓语动词要用复数形式；call up表示打电话，后跟人称代词时要把代词放在两词中间。