01. c a b 02. 1. immigrated 2. belonged to 3. was involved in 4. was arr...

01. 1. reach 2. used to 3. hold 02. 1. He had finished his homework befo...

01. 1. either…or… 2. is equal to 3. From his point of view 02. 1. may…ma...

01. 1. have been 2. was held 3. have gotten 02. happened , hit , caused,...

3. 最后一题改为is surrounded