To some extent, uncontrolled information from the website that many people turn _______ false.

Why does the lake smell terrible? -Because large quantities of water . [ ]

Has your brother returned from America yet? — Yes, but he ______ here for only three days before his company sent him to Africa

Not until all the fish died in the river ______ how serious the pollution was.

The search was________when night came,even though the child had not been found.[ ]