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。