28．A．behavior            B．luck             C．influence          D．habit

27．A．because            B．after               C．though                  D．unless

26．A．describe            B．find             C．explain            D．promise

25．A．changed            B．hurt             C．taught           D．helped

24．A．encouraged         B．frightened        C．tired               D．pleased

23．A．doctors            B．drivers            C．me              D．herself

22．A．sing              B．walk              C．write            D．read

21．A．light              B．radio            C．recorder           D．TV

20．A．truck              B．tent             C．job                D．license

19．A．dark              B．natural             C．bright             D．meaningful