插入语练习题1. He made another wonderful discovery,_ of great importance to science. (上海 1998 )A. which I think is B. which I think it isC. which I think it D. I think which is2. Mr. Anderson, _ I thought died three years ago, is still living.A. who B. whomC. that D. which3. The repair work of Angkor Watt _would last at least ten years was completed within eight years.A. which people supposed B. which people supposed it