We were busy ________ (get) things ready for the trial production when he phoned us.
getting
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Somemoleculesarelargeenough________(see)undertheelectronicmicroscope.
Those who’d like to visit the exhibition ________ (sign) your names here.
A great number of small power stations ________ (set up) in their county since liberation.
We were busy ________ (get) things ready for the trial production when he phoned us.
I wonder if he could get it ________ (do) before tomorrow.
