18．Look!Dave and Maryare dancing（dance）

分析 看！Dave和Mary正在跳舞．

解答 答案：are dancing  考查單詞填空．look表示dance正在發(fā)生，要用現(xiàn)在進(jìn)行時(shí)態(tài)，且主語(yǔ)Dave and Mary是復(fù)數(shù)，助動(dòng)詞用are．

點(diǎn)評(píng) 考查單詞填空，準(zhǔn)確地理解題意、然后根據(jù)題意及提示確定所填單詞詞形，正確寫(xiě)出單詞完成答題．

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