(a-t)×(b-t)怎么解
(a-t)×(b-t)怎么解
∫[a,b] e^(-t^2)dt怎么解啊
y=(t+a)/(t-b) t=?
The car__much money.A isn't cost B didn't cost选哪个怎么解释
Is a typical B.T.OHello!B.T.O
Mary and Linda___here now.A.aren't B.don't C.isn't D.doesn't
C语言小问题 if (a>b) t=a; a=b; b=t; 就是搞不懂这个怎么转换的
----------late for class.A Don't B Oon't be
He___feeling well. A:isn't B:doesn't
Their parents ( )at work A.aren't B.don't
请帮我解释A和B!T^T
Could I stay out late 怎么回答 A.No you can't B.No you couldn't