situation __________ this idiom can be used? Р A. which B. that C. where D. in that Р46. I have many books, some of __________ are on chemistry. Р A. them B. that C. which D. those Р47. They were interested __________ you told them. Р A. in which B. in that C. all that D. in everything Р48. The astronaut did many experiments in the spaceship, __________ much help for knowing space. Р A. which we think it is B. which we think are of Р C. of which we think is D. I think which is of Р49. The great day we looked forward to __________ at last. Р A. come B. came C. coming D. comes Р50. I like the second football match __________ was held last week. Р A. which B. who C. that D. /