题一: was it in this palace ________ the last emperor died? a. that b. in which c. in where d. which 题二: it was a year ago ________ i first met him here. a. which b. that c. in which d. when 题三: it is zhuang hua ________has seen the film before. a. which b. who c. whom d. whose 题四: it is these poisonous products