（他一回來(lái)），he went straight to the boss and beat him black and white.（on）

               （很有可能）he will stress the point at the meeting tomorrow.（chance）

A net is to a fisherman                    (就如槍之于獵人) a hunter. (gun)

                   (如果被困在) a burning building, you should send for help. (trap)

I do believe it is possible for different races                             （和諧地生活）.(harmony)

Only in recent years                       (人們開(kāi)始意識(shí)到)that wild dogs, kept within bounds, often do more good than harm.(realize)

 Like some of my classmates, I cannot live up to my teachers’ expectations; _______I let them down.

       A. in other words        B. after all          

C. what’s more        D. more or less

It is a(n) ______idea to keep a machine running all the time without any power supply.

       A. reasonable       B. absurd             C. proper           D. available

 The store had no more Christmas tree ______, so dad had to make one himself.

       A. in preparation         B. in store       

       C. in need                  D. in demand

One of the causes of the generation gap is that parents fail to _______ their children.

       A. link with        B. connect to       C. depend on        D. relate to