“在办公室里”介词用什么,in or at

He's in his office now。他现在在办公室里。Fit up a telephone in the office在办公室里安装电话。furniture intended for use in an office。用在办公室里的家具。I've been slaving away in the office。我一直在办公室里埋头苦干。They seldom remained in their offices。他们很少待在办公室里。She hates being boxed up in an office all day。她讨厌整天关在办公室里。She hate is boxed up in an office all day。她讨厌整天关在办公室里。They were yoked together in the same office。他们给束缚在同一个办公室里。The MD is in his office。总经理在他的办公室里。Waited in the dentist's office for an eternity。在牙医的办公室里无休止的等待