为了健康晚餐()。
A.一定吃饱
B.七八成饱
C.不吃为好
参考答案:B
—How wise of you to come round, but why?
— that all is right.
A.See
B.To see
C.Seeing
D.For seeing
一个正方形的边长增加3cm,它的面积就增加39cm2,求这个正方形的边长.