A.cover 為正確選項(xiàng).
if.是一個(gè)條件狀語(yǔ)從句,故后面必須是個(gè)句子,填cover,使后面是個(gè)祈使句.原句還可以改為：Cover the pan,if a pan of oil catches fire.
If a pan of oil catshes fire,____the pan.A.cover B.covering C.covered D.to cover
If a pan of oil catshes fire,____the pan.A.cover B.covering C.covered D.to cover
選哪個(gè)呢,請(qǐng)分析每個(gè)選項(xiàng),
選哪個(gè)呢,請(qǐng)分析每個(gè)選項(xiàng),
數(shù)學(xué)人氣：168 ℃時(shí)間：2020-06-21 12:50:25
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