B
從was看出句子為過去式,所以情態(tài)動(dòng)詞也應(yīng)該用過去式,Could是Can 的過去式.
她九歲時(shí)會(huì)游泳嗎?
______she swim when she was nine years old?
______she swim when she was nine years old?
A.Can B.Could C.Can’t D.If
為什么不能選A?
A.Can B.Could C.Can’t D.If
為什么不能選A?
英語人氣：687 ℃時(shí)間：2019-10-27 11:22:26
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