把下列字母重新组合成疑问代词，并把它们填入句子中。
⑴ ________ is on duty today?
⑵ —________ book is this?
—Sorry, I don’t know.
⑶________ one is your mother?
⑷一________ colour is your new car?
— It’s red.
把下列字母重新组合成疑问代词，并把它们填入句子中。
⑴ ________ is on duty today?
⑵ —________ book is this?
—Sorry, I don’t know.
⑶________ one is your mother?
⑷一________ colour is your new car?
— It’s red.
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