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is it active? what tense? Endangered species could be bred
Passive. Present
what's the active? what tense? A lot of things can be done at zoos.
people can do lots of things at zoos. present
what tense? is it active? where would the animals be released?
present /future - passive
present? active? Wild animals shouldn't be kept in captivity
present. passive
passive? tense? Government ought to ban zoos
active. present advice
active? tense? use? she can't have gone home. her coat is still here
active. past deduction.
passive? tense? use? I wonder who sent those flowers. it must have been Marc, he is so romantic.
passive. past deduction
passive? use? people shouldn't have been allowed to destroy those habitats
passive past. criticize
active or passive? He didn't eat much rice. He _______(be) hungry, then.
can't have been. active
active or passive? I've thrown up 3 times. you ____ (eat) something rotten
must have eaten
active or passive. Animals should _____(be)____ (leave) in their natural habitat
passive. be left
passive or active?. use? if you could access it means the door _______ (be) opened
must have been
He cheated on the exam. The teacher should _____(punish) him or the student should ____(punish)
teacher should have punished him / the student should have been punished
use? active or passive? she is late, I suppose she _______(hold) up by the traffic.
might/may have been held up
active or passive? use? she would have attended the concert if she had known. she _____ (be) told.
passive . can't have been told.
tense? use? my father couldn't sleep last night. He ___(be) disturbed right now.
present. shouldn't be
