题目内容
— How about buying an iPhone 4s for your mother’s birthday?
— Oh, maybe it’s too expensive, Dad. Do you know _______?
— Oh, maybe it’s too expensive, Dad. Do you know _______?
| A．how much does it cost | B．how much it costs |
| C．how much it cost | D．how much did it cost |
B
本题是特殊疑问句作宾语从句，要用陈述句语序。故选B
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