IF you want to keep your room clean and tidy,it ___every dayA will cleanB must be cleaned记得clean是用主动语态表被动的,为什么答案是B呢,

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IF you want to keep your room clean and tidy,it ___every dayA will cleanB must be cleaned记得clean是用主动语态表被动的,为什么答案是B呢,

IF you want to keep your room clean and tidy,it ___every dayA will cleanB must be cleaned记得clean是用主动语态表被动的,为什么答案是B呢,
IF you want to keep your room clean and tidy,it ___every day
A will clean
B must be cleaned
记得clean是用主动语态表被动的,为什么答案是B呢,

IF you want to keep your room clean and tidy,it ___every dayA will cleanB must be cleaned记得clean是用主动语态表被动的,为什么答案是B呢,
it指代your room,房间是被整理和被清洁的,所以要用被动语态

这是一个虚拟语气,用must表示事情并没有做,想保持房间干净的话,需要每天打扫房间。
clean我没有听说过用主动表被动。

it指的是room,无生命,无法跟此处词性为动词的clean……

B

这是一个虚拟语气.
Clean 在这里的用的是原形,keep sth clean. 主动语态表被动,keep sth do sth 可以按固定词组来记.
而it must be cleaned 用的是虚拟时态的被动语态.
it指的是房间.是
如果你想让你的房间干净,整洁,你必须每天打扫.

it must be cleaned 也不像是虚拟哦