—Are Jim and Bob playing outside?
—_______. They are doing their homework in the study.
A：Either
B：Both
C：Neither
D：None
选择正确的字
（优 忧）闷____ 致（蜜 密）____ （疆 僵）硬____ 狂（怒 恕 ）____
（玩 顽）皮____ 锻（炼 炼）____ （拔 拨）河____ （座 坐）位____
