4. look, see, watch, observe, glance, stare, glare,

         look vi.看, 注意, 朝着, 好象, 显得vt. 打量, 注视, 用眼神(或脸色)表示, 期待

         see 看, 看见, 了解, 领会, 注意, 留心, 经历, 阅历

         watch 看, 注视, 照顾, 监视, 警戒, 守护, 看守,等待

         observe观察, 观测, 遵守, 评述, 说

         glance扫视, 匆匆一看glance at

         stare 凝视, 盯着看stare at

         glare怒目而视；瞪眼 glare at

He _________ at the word trying to remember what it meant.

They were ___________ entering the bank.

When and how do you ________ Martin Luther King Jr Day?

She _________ her moment to cross the road.