Don’t leave the water______ while you brush your teeth.
Li Ming is said ______ the experiment in the lab, but I can’t find him there.
They live in a beautiful village, with many trees and flowers _______ it.
– Is John coming by train? – He should, but he _______ not. He likes driving his car.
– I rang you at about ten o’clock, but there was no reply. – Oh, that was probably ________ I was seeing the doctor.
I feel uncomfortable each time I remember the situation _______Mary didn’t agree with me _________ the matter.