几道定语从句的训练题,麻烦给出答案,

几道定语从句的训练题,麻烦给出答案,20.She is pleased with ______ you have given her and ______ you have told her.A) that/that B) what/that C) what/all what D) all/what21.I,who ____ your friend,will try my best to help you.A) be B) am C) are D) is38.We grow all our own fruit and vegetables,_____ saves money,of course.A) which B) as C) that D) what39.Today the public is much concerned about the way _____.A) nature is being ruined B) which nature is ruinedC) on which to ruin nature D) of nature to be ruined35.The mere fact _____ most people believe nuclear war would be madness does not mean that it will not occur.A) what B) which C) that D) why