—You___________ stop me.—Even if you __________it, I won't allow you to swim across the river.
—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.
—The poor people lived near the highway.—_____ very noisy.