选择主动或被动语态填空。 How did people communicate over long distances before the phone _________ (invent)?
查看答案
选择主动或被动语态填空。 The project __________________ (complete) next week by our outstanding marketing department.
选择主动或被动语态填空。This house is quite old. It _______ (build) over 100 years ago.
选择主动或被动语态填空。My grandfather was a builder.He _______ (build) this house many years ago.
选择主动或被动语态填空。Sometimes mistakes _________ (make).It is inevitable.