Give the correct form of the verbs in brackets. | Baamboozle - Baamboozle

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……………. you ………………… (complete) your assignment yet ?

have you competed

His father-in-law ……………………. (do) research since last year.

has done

The lives of Vietnamese farmers ……………………. (change) dramatically since the invention of the harvesting machine.

have changed

Sarah ……………………. (collect) plenty of information for the assignment recently.

has collected

The bell (ring) __________ while Tom (take) ____________a bath.

rang-was taking

He ……………………. (teach) English in this university for 3 years

has taught

I realize that I ……………………. (not spend) much time away from home up to now, but am keen to become more independent.

haven't spent/ have not spent

The children were playing football when their mother (come) ________ back home.

come

Mr Green. (teach)_______ English in this school since he (graduate)_______ from the university in 1986.

has taught- graduated

This is the longest essay that I ……………………. (ever/have) to write.

have ever had