Jack _____(leave) until his teacher comes back.why?

Jack _____(leave) until his teacher comes back.why? Jack _____(leave) until his teacher comes back. until 用法Jack leave his teather comes back .A doesn't until B he ( )leave until his mother comes back. jim ____ leave ____ his teacher comes back He doesn't do homework until his mother comes back. tom ,_____(stay) here until your mother comes back I won't leave here until my mother comes back,comes为什么要用一般现在 Don't leave until he _____ back tomorrow we won't leave until we get it back(同义句） _____ leave ______ We will stay until he comes back.同义句转换 We＿ ＿leave until he c He won't leave until his father comes.中come 为什么加s