The key to exercise solutions in chapter Additional exercises for the textbook English Grammar in Use with authors Raymond Murphy from Cambridge University Press
Question
Put the verb into the most suitable form.
Answer
invented
it's gone /it has gone
had gone; left
did you do ... Did you go
have you had
was looking /'d been looking
She's been teaching
I bought; I haven't worn / I didn’t wear
I saw; was; I'd seen; I remembered; it was
Have you heard; She was; died; She wrote; Have you read
does this word mean; I've never seen
Did you get; it had already started
knocked; was; she'd gone; she didn’t want
He'd never used; he didn’t know
went; She needed / She'd needed; she'd been sitting