Have youasked the policeman _______— Yes. He toldus to turn left onto Main Street. It’s on the right.

ed to go away without being noticedby the teacher, but luck him

Tom almost ran into a pole yesterdaywhile driving on the highway— I suppose he ____ too fast

It is wise of you towell trained workers for untrained ones in your workshop. A．substitute B．changeC．exchange D．employ

The scientist corresponds with colleagues in order to learn about matters ________ to her own research.