In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.

[Q]: Blood pressure is really _ measurements, systolic and diastolic.
[A]: two


[Q]: B cells can receive stimulation in _ ways.
[A]: two


[Q]: Tidal currents can exceed three knots and standing waves, rips, can be more than _ feet high.
[A]:
ten