整场讲座我都心不在焉,一直想着我的假期计划。
I ___was ___in ___a ___dream during the entire lecture, thinking about my holiday plans.
现在别跟他说话——他看起来心不在焉,你说什么他都听不进去。
Don't talk to him now—he seems to ___be ___in ___a ___dream and won't hear a word you say.
她开车时完全在走神,差点错过了出口。
She was driving on autopilot, completely ___in ___a ___dream, and nearly missed her exit.