i wonder how much_____a.does the watch costb.did the watch costc._英语解答

i wonder how much_____
a.does the watch cost
b.did the watch cost
c.the watch costed
d.the watch cost
为什么?

人气：470 ℃　时间：2019-11-22 08:50:15

解答

D,I wonder后引导宾语从句,用陈述语序,而cost的过去时是cost不变