单选题 It was because he was ill ______ he didn't go to school.
  • A) that
  • B) when
  • C) then
  • D) so


【正确答案】 A
【答案解析】[考点] 强调句
[解析] 强调原因状语从句，即It is(was)+强调成分+that(who)+原句中的剩余成分，故应选A。