FCE/DS conditionals and regrets
If I................you, I................. the red dress. be/buy
If I were you, I would have bought the red dress.
(I am not you, so I did not buy the red dress in the past).
If the teacher............here, she .................... on the heater this morning.
be/turn
If the teacher were here, she would have turned on the heater this morning.
(The teacher is not here right now, so the heater was not turned on this morning.)
If the students ........ more time, they ................... their work yesterday.
have/finish
If the students had more time, they would have finished their work yesterday.
(The students do not have more time, so they did not finish .....)