【题目】He was allowed to stay on with his grandma he restricted himself to his studies.
A.in caseB.even ifC.as thoughD.so long as
在线课程【答案】D
【解析】
考查连词词义辨析。句意：只要他能限制自己到学业上，就被允许继续和他的奶奶待在一起。A. in case以备；竟然；B. even if 尽管、即使；C. as though 好像；D. so long as 只要。根据restricted himself to his studies管好自己去学习，后一句是条件，故属于条件状语从句，故选D。