1. Active voice, Present Simple - main. Passive, Present Simple - The questions asked by the macroeconomist 2. Active voice, Present Simple - What determines the capital spending, Active, Past Simple - all firms combined as opposed to the decision to build a new factory by a single firm 3. Active voice, Present Simple - both 4. Active voice, Present Simple - Macroeconomic analyzes attempts to explain , Passive, Present Simple - the magnitudes of the principal macroeconomic variables are determined.