—Yes.
A:did; order
B:did; be ordered
C:has; ordered
D:has; been ordered
4+8=____
11-6=____
11-5=____
9+6=____
12-7=____
7+8=____
9+3=____
13-4=____
6+7=____
6+6=____
下列词语中加线字的读音正确的一组是( )