What languages do you know German and English?
 What languages do you know             German and English?       a.except                      b.beyond                     c.besides                            d.above6.He’s been             my letter for months; why doesn’t he answer it?       a.responding to            b.sitting on                  c.listening to                      d.working on12.Growth should not be             at the expense of environmental pollution.       a.pursued                    b.proposed                  c.tracked                            d.traced