There are three floors ______ this building and my classroom is ______ the second floor. &...
Therearethreefloors______thisbuildingandmyclassroomis______thesecondfloor.[]A.on;inB....
There are three floors ______ this building and my classroom is ______ the second floor. [ ] A. on; inB. in; onC. of; onD. in; in
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