4 She looks very ________ b) sad b) sadly c) badly

The correct answer is b) sad. Explanation: 'Sad' is an adjective, and we need an adjective to describe how she looks. 'Sadly' is an adverb, which describes how an action is performed. 'Badly' is also an adverb. She looks very *sad*. – Она выглядит очень *грустной*.