问题补充：
--- Can I go out and play football with my friends, mum?
--- Sorry, my dear. I am afraid you have to stay at home if your bedroom .
A. isn cleaned up
B. is cleaned up
C. will be cleaned up
D. cleans up
答案：
(答案→)A. isn cleaned up
B. is cleaned up
C. will be cleaned up
D. cleans up
解析：if引导的条件状语从句,一般用一般现在时表将来的意思。本题中卧室应该是被打扫，故选A.句意：妈，我能出去和我的朋友踢足球吗？不行，亲爱的。如果你的卧室没有被打扫的话，你就必须呆在家里。
