一．
( ) 1. The meeting didnt start___ everyone was there.
A. because B. until
C. why D. if
( ) 2 The boy ___ to bed ___ his mother came in.
A. went not; until B. didn after
C. went; until D. didn until
( ) 3 I wont believe you___ I have seen it with my own eyes.
A. before B. until
C. after D. when
( ) 4 He ___ home ___ she was satisfied ___ his answer yesterday.
A. didn until; with B. wasn after; to