Theengineersinthislabspentseveralweeks_______theirplansforthenewbicycle.
Severalloudspeakersare_______fromtheceilingandwecanhearthespeakerveryclearly.
Allthememoriesofhischildhoodhad_______fromhismindbythetimehewas65.
Thedoctors_______themedicinestothepeopleinthefloodarea.