A.當(dāng)場(chǎng)收起來(lái) B.當(dāng)場(chǎng)打開(kāi)請(qǐng)大家一起看 C.當(dāng)場(chǎng)回贈(zèng) D.當(dāng)場(chǎng)感謝并打開(kāi)觀看
A.迪斯科舞廳 B.會(huì)間休息時(shí) C.觀看畫(huà)展時(shí) D.聽(tīng)音樂(lè)會(huì)時(shí)