单选题 It was ______ that he couldn' t finish it alone.
A. a so difficult job B. such a difficult job
C. so a difficult job D. such difficult a job

【正确答案】 B

【答案解析】[解析] 词义辨析题。本句的意思是：这项工作太难，他无法单独完成。连词短语题：so...that...和such...that...结构的意思相同，such后跟名词，so后跟形容词或副词。