She is ______ (good) than Alice at swimming.
The boys are sitting under the tree.(对划线部分提问 )
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必要的;基本的 adj.要素,要点 n. e_______________
微分方程y'=x+1的通解为y= ______.
short( 反义词 )__________
to ,I,put ,the ,ball ,in,the ,box ,want
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设随机事件A与B相互独立,且P(A)=P(B)=1/3,则=_______.
too(同音词)__________
him ,give ,please ,water ,a,of ,bottle
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boy_______(复数)