We _____ on this project for four hours. Let’s have a rest.
—When did you last hear _____ Jay? —He phoned me this morning, and we agreed____ a time and place to meet.
She can't help ______ the house because she's busy making a cake.
Footsteps ___ his return.
As is known to all, theory is based on practice and _____ serves practice.
What he has done is far from ______.