a) Study the key words of the unit in the dictionary at the back of the book:
tax, taxation, tax allowance, tax breaks, tax concessions, tax benefits, tax exemptions;
b) Think of the verbs that are commonly used with:
tax, taxation, profits, revenue, complaint, claim, effects, non-compliance, tax rate, burden of taxation, privilege, income, exemptions;
c) Think of the nouns that are most often used with:
to levy, to collect, to tax, to impose, to introduce, to pay, to reduce, to avoid, to evade, to exempt;