— Helen hasn ’t shown up so far.It’s five past seven. — It’s________of her to keep others waiting.Now,let’s go.I have no patience. |
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A.casual B.common C.regular D.typical |
若非零函数fx对任意实数ab均有f(a+b)=fa*fb,求f0
1年前2个回答
用所给单词填空.Helen likes ____ (panda)
1年前8个回答
1年前3个回答
你能帮帮他们吗