—My car broke down last week and I still it repaired.
A:didn't have
B:hadn't had
C:haven't had
D:won't have
代数式3x2y-4x3y2-5xy3-1按x的升幂排列,正确的是( )
报社派爸爸去采访珠海民间艺术鹤舞,爸爸想学上几招,加深体验。他对表演鹤舞的老艺人说:“我是个_____,恳请老师傅赐教!”填入横线部分最合适的词语是( )。