Fill in the missing letters

6.6 Study the collocations below. Check any unknown words in a dictionary.

first-rate, high, low, inferior, outstanding, top, uneven, poor, variable	quality
assess, demand, evaluate, keep up, insist on, maintain, measure, preserve, test	quality
begin, boost, cut back (on), go into, increase, ramp up, reduce, scale down, speed up, start up	production
be in charge of, keep track of, monitor, rationalize, simplify, streamline, supervise	the process
excess, full, limited, maximum, reduced, peak, spare, tota	capacity
carry, dispose of, get rid of, have, hold, keep, reduce, reorder, replace	inventory (= stock)