These shoes look very good. I wonder ___
题型:选择题
问题:
These shoes look very good. I wonder _______.
A.how much cost they are
B.how much do they cost
C.how much they cost
D.how much are they cost
These shoes look very good. I wonder _______.
A.how much cost they are
B.how much do they cost
C.how much they cost
D.how much are they cost