verb/ noun / adjective

adjective / preposition / verb in noun form

preposition / conjunction / verb in noun form

verb in noun form / preposition / conjunction

conjunction / verb in noun form / preposition

Mouth, eyes, nose.

Boss, director, superintendent.

Lead, manage, supervise.

Go, move, run.

eaten.

eats.

eat.

ate.

incorrect because the action referred to began before another past action, so that the Past Perfect should be used instead.

correctly used, but the Simple past could also be used without any change in meaning.

correctly used because it refers to an action that started in the past and continues in the present.

incorrect and should be replaced by the Present Continuous because the action occurs repeatedly in the present.

set out.

am setting out.

am not setting out.

did not set out.

needed.

must.

ought.

should.

When did you go

Have you ever been

Has she been

Are you going

have been

am going

went

gone

is

does

do

has