`underline("Fight tooth and nail")`

What is tooth decay ?

Identify the two parts in the sentences below by underlining the part that gives us the information in brackets. She decided to fight the system when the right moment arrived. (Tells us when she was going to fight the system.)

Each item in this section consists of sentences with an underlined word followed by four words or group of words. Select the option that is opposite in meaning to the underlined word and mark your response on the Answer Sheet accordingly. Everyone has to fight the underline("inertia") in the system.