—Go and ask the waiter how much_______.—Don't worry.It has been _______.A.does the meal cost ,paid for B.the meal costs,paid C.the meal spends ,paidD.the meal costs,paid for为什么要选B ,为什么这里用paid ,而不用paid for?D为什么不能选?

问题描述:

—Go and ask the waiter how much_______.—Don't worry.It has been _______.
A.does the meal cost ,paid for
B.the meal costs,paid
C.the meal spends ,paid
D.the meal costs,paid for
为什么要选B ,为什么这里用paid ,而不用paid for?
D为什么不能选?