一次函数 y=ax+b 与反比例函数 x c y 的图象如图所示， 则二次函数 y=ax 2+bx+c 的大致图 象是（）

--- Whose French book is it?

--- It __________ be Lucy ’s. Look! Her name is on the book!

()______ is my umbrella? It's over there.

She can't ________ in the lake

()What about __________?

()Please give ____ a cup of tea.

Bob often ____ his mother with the housework on Sundays.

下列有关生物体结构层次的叙述中正确的是()

( ) ____ a cat.

下列病句修改错误的一项是()