“That VCD you bought very expensive” . “Do you know ? ”A. ought to be ; how much it cos

“That VCD you bought very expensive” . “Do you know ? ”
A. ought to be ; how much it cost
B. may be ; how much it costs
C. must be ; how much it cost
D. can be ; how much doesn''t it cost

A. ought to be ; how much it costB. may be ; how much it costs(答案→)C. must be ; how much it costD. can be ; how much doesn''t it cost解析：根据语序排除D，A不合语意，B中第二空时态不符。

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