--------------------------------------------------------------------------------

1.engaged: adj. 已订婚的;(指电话)占线的;(指厕所等)有人用的.
2.exhausted: adj.耗尽的; 筋疲力尽的；
3.ignorant: adj.无知的, 愚昧的He's so ignorant that… I'm ignorant of his plan ；很无礼的，不懂规矩的
4.energetic: adj.精力充沛的, 充满活力的

可怜的老太太由于过于疲惫和悲痛而无法提及这场悲剧。
解题线索：poor, exhausted, distressed，tragedy
too……to：太……而不能（否定句式）
distressed：哀伤的
联想记忆：tragedy:悲剧;  comedy:喜剧；opera:歌剧；drama:戏剧

engage(占）

--------------------------------------------------------------------------------

vt.
v.  雇佣 ：The restaurant decide to ~ a pop singer.
啮合：If the big gear（齿轮）did not ~ with the small one, the machine would refuse to work.
与……交战：Our orders are to ~ (the enemy) immediately. 我们的命令是立即(与敌军)开战。
答应：I will ~ to manage the business if you will ~ to provide the capital.如果你答应出资本，我答应经管这个生意。
订婚：Jack and Anne are ~ d.
预定：I have ~ d a room at this hotel.
参加：I have no time to ~ in the debate.  Is it wise to ~ in active sports at your age? 你这样的年纪积极参加体育活动是否明智？
从事：They ~ in the study of music.他们从事音乐研究。Those who ~ in mental work are also workers.从事脑力劳动的人也是劳动者。