20. Don’t leave matches or cigarettes on the table within　the ________ of little children .

　A．hand 　　　　　　 B．reach 　　　　 C．space 　　　　　 D．distance

19. --- Where____ the recorder?　 I can’t see it anywhere.　

--- I ___ it right here.　 But now it’s gone!　　　　　

A. did you put; have put　 　　　　　　　B. have you put; put　　

C. had you put; was putting　 　　　　　D. were you putting; have put