You must ______the English course one month before it begins.
Jill _______ take a bus to work. But now she _______ walking to work because she wants to keep fit.
--- Have you seen ________ girl play around?--- Oh, do you mean girl over there behind the tree?
—How does your uncle usually go to work?—He ________ drive a car, but now he ________ a bike to lose weight.
Jack has worked here since he ________school.
Millie has seen the TV ________. Have you seen it ________?