It amazes me that a week ago I was worried that my camp presentation would be a flop.
This probably means that something you had planned to turn out well, ended up going against you. The scenario flipped it's self around and you were so said "betrayed" by your own plan or game.
The correct answer is B. The students did the experiment in the lab on Wednesday.
All other possible answers keep it in the passive form, only B is active.
Answer:
we were coming back from mask break, the boys took forever, they got locked out & i opened the door for them because they would get in trouble
