A:(﹣3,4)
B:(﹣3.5,4)
C:(﹣3.7,4)
D:(﹣4,4)
已知3xa+bya-b与2xa+1y是同类项,那么 ( )
已知方程组2x+y=4x+2y=5,则x+y的值为____
我下周打算去旅行。
I'm going to ____ ____ ____ next week .
The classroom ____ ____ ____ ____ every day.