Helen had left her keys in the office so she had to wait unt

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Helen had left her keys in the office so she had to wait until her husband ___home.为什么填came
would come 和comes为什么不对 until是不是前后时态要一致呢
如果只有后半句话she had to wait until her husband ___home.那么应该填什么也是came吗

这里要选的时态,主要看she had to wait 的时态,这里用了一般过去时,所以后半句也用一般过去时.同样如果只有后半句的话,也应用came.一般情况下由until引出的重句,前后都是一般现在时或都一般过去时用的较多,但也可以是前半名是将来时后半句是一般现在时；也可以是前半句是一般现在时,后半句是现在完成时.例1：First write them down in your exercise books, then practice them orally until you have learned all of them by heart.例2：I will stay with you until your lesson begins

Helen had left her keys in the office so she had to wait unt Helen had lost her keys in the office so she had to wait unt 英语15.Helen _______ her keys in the office so she had to wait Helen _______ her keys in the office so she had to wait unti Helen _____ her keys in the office so she had to wait until Helen ( ) her keys in the office so she had to wait until he Wang Ping _____his keys in the office so she had to wait unt 英语改错并说明原因Helen left her key in the office,so she had to wait 16.Mrs Smith----- her keys in the office so she had to wait Helen___her keys in the office,so she had to wait until her 动词时态的Allen ____ her keys in the office.So she had to wait un Helen___her keys in the office so she had to wait until her