— Can I smoke in this hall?— No, you can’t. If you _____, please go to the smoking room.
____ he will come or not is still unknown.
We offered him our congratulations ____ his passing the college entrance exams.
He will come ____ you ask him.
I made the coat ____ my own hands. It was made ____ hand, not with a machine.
Everything around us is ____ solid ..liquid ____ gas.