---So you've left the classroom key inside again?---No.I've got it with me this time,but I have forgotten ______ the door?
Preparations have been ______for the project and it can be started at any moment.
The professor, ________ his assistants, _______ conducting the experiment.
--- Did you have a good time at the party? --- Thanks. I appreciated _________ to your home.
It will be _____ fortnight before he gets _______bachelor’s degree.
---Mike, Guess what? Our team won the basketball game yesterday. ---_________.