The drinking water is contaminated with impurities.

A:blackened B:polluted C:darkened D:mixed

The drinking water is contaminated with impurities.

A:blackened B:polluted C:darkened D:mixed

A darkened sky in the daytime is usually an indication that a storm is ______ .

A:possibly coming B:about to take place C:close by D:expected to be severe

Thick clouds {{U}}obscured{{/U}} the stars from view.

A:darkened B:held C:blackened D:prevent

Thick clouds obscured the stars from view.

A:darkened B:held C:blackened D:prevent

The drinking water is contaminated with impurities.

A:blackened B:polluted C:darkened D:mixed

Thick clouds {{U}}obscured{{/U}} the stars from view.

A:darkened B:held C:blackened D:prevent