(  )21.The story ___ I read in the newspaper was about a common problem among teenagers.A.whose B.who C.that

(  )22.I’ll never forget the day___ the great scientist came to our school and gave us a speech.A.that B.which C.when

(  )23.I won’t believe him____ he says.A.why B.whatever C.however

(  )24.I prefer to ____ a book rather than ____ a bad TV program.

A.read,watch B.reading,watching C.read ,to watch