We'll have to go without him unless he（ ）before our train departs.
A、
come
B、
comes
C、
has come
D、
will come
【正确答案】：B
【题目解析】：
unless为除非，是条件状语从句，主句用将来时，则从句用一般现在时表将来，考查主将从现，主语为he，第三人称单数，所以选comes。选B。句意：除非他在我们的火车出发前来，否则我们只好自己走了。
We'll have to go without him unless he（ ）before our train departs.
We'll have to go without him unless he（ ）before our train departs.
come
comes
has come
will come
unless为除非，是条件状语从句，主句用将来时，则从句用一般现在时表将来，考查主将从现，主语为he，第三人称单数，所以选comes。选B。句意：除非他在我们的火车出发前来，否则我们只好自己走了。