David and Anna play tennis twice ...... week.

The managers have the meeting once ...... year.

Our supervisors talk to us about the progress of our work about three times ...... month.

The security officer checks the people in the hall about twice ...... day.

The going price is almost £ 2.34 ...... kilo.

I'm afraid you were driving at 80 kilometres ...... hour, sir.

We only sell eggs by ...... doen.

Is it possible to pay the rent by ...... quarter?

Are you selling those potatos by ...... kilo?

Those bankers are interested in purchasing the land by ...... square metre.

Could we pay the installments by ...... month?

Ms Willson would like to cash her cheques by ...... week.