Is your father home?No,he 's working ________ the office.A.on B.at C.of D.to
问题描述：
Is your father home?No,he 's working ________ the office.A.on B.at C.of D.to
答
选B
at the office,在办公室,固定搭配,记住就行.
另外,at office是在办公室工作的意思,at the office只强调在办公室,在办公室不工作也行.