21、Edward ______after rainbows and never comes up with a really practical idea．

A．is always chasing                B．has already chased

C．will soon chase．                  D．is often chased

20、He’s been resting today，so ______ he’ll be feeling better tomorrow．

A．originally                            B．hopefully

C．especially                             D．particularly

18、– Bob has gone to California．I hear．

– Oh．I wonder when he ___________．

A． left 　　　B． leaves          C．has left　　     D． was leaving

17、Look at his ________  look．It seems as if he had met a _________ tiger．

A． frightened, frightening                               B． frightening, frightened

C． frightened, frightened                                D． frightening, frightening

16、—I _______ to your birthday party last Sunday．

—Unfortunately, you were out on business．

A． had come                                         B． came

C． would come                                     D． would have come

15、– What did you do in the garden?

– I watched my father ______ his motorbike．

A． to repair               B． repaired                C． repairing               D． repair