问题补充：
He has been in bed he fell off his bike a week ago.
A. even if
B. soon after
C. now that
D. ever since
答案：
A. even if
B. soon after
C. now that
(答案→)D. ever since
解析：考查从句连接词。A即使，引导让步状语从句；B不久之后；C既然；D自从，从那以后。现在完成时+since+含过去时的句子，意为“自从......就......”。故选D。
