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.