什么是矩阵单位化:(It is necessary for )me to take a taxi.括号部分可换成那些词或词组?
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study(现在分词)drop(现在分词)valley(复数形式)windy(名词形式)
it is necessary ......是什么意思?
Is it necessary or unnecessary for a middle school student to use a cellphone.
why do people it is necessary for people to give up smoking?
(It is necessary for )me to take a taxi.括号部分可换成那些词或词组?
He found it necessary for us ( ) from each other.
He found it necessary for us ( ) from each other.
Is it necessary to inform paitent of cancer?
is it necessary to have military drill in high school?
Is it necessary to rebuild somedestroyed cultural relics
youth is happy for it is promising!