1、In an hour, we can travel to places _ would have taken our ancestors days to reach.A.Where B. when C. which D. what 答案：C2.、He has two children, both of _ are abroad.A、them B、which C、whom D、who答案：C3、The girl arranged to have piano lessons at the training center with her sister _ she would stay for an hour.A、where B、who C、which D、what 答案：A4、A good friend of mine from_ I was born showed up at my home before I left for Beijing.A how B whom C when D which 答案：C5、The house I grow up _ has been taken down and replaced by an office building.A in B in it C in that D in which答案：A6、shell never forget her stay there _she found her son who had gone missing two years before.A that B which C where D when 答案：C7、last Sunday, I went shopping for the perfect dress ,_ would make me look younger.A one in which B the one in which C one that D the one that答案：D8、Work songs, _, often exhibit the song culture of a people in the basic form.A in which they occur B occurring whereC where they occur D where do they occur答案：C9、More wild tigers have been seen in the forest around this area, _ there used to be very few.A when B where C what D which 答案：B10、The idea has been widely accepted _ man should live in harmony with nature.A that B which C when D where答案：A