-Where's Tom? --He's left a _______ saying that he has something to do.
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.
It will be more than 100 years ____ the country begins once again to look as it did before.