There used to be a small school,___________?
—Well, I forgot to bring my dictionary here yesterday.—Actually you _____ it here. You were not allowed to use it.
—Many people in England love to give advice on weather reporting.—Yes, but I think the weather office’s computers _____ be more accurate.
The whole building _____ burned down, but the heavy rain _____.
Messages ______ be changed from sound into electricity before they ______ be sent by radio.
He _____ his parents that he has failed in the exam.