I knew I couldn't finish my homework ( ).A.by he had come B.until he came C.when he comes D.before he comes

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I knew I couldn't finish my homework ( ).A.by he had come B.until he came C.when he comes D.before he comes

I knew I couldn't finish my homework ( ).A.by he had come B.until he came C.when he comes D.before he comes
I knew I couldn't finish my homework ( ).
A.by he had come B.until he came C.when he comes D.before he comes

I knew I couldn't finish my homework ( ).A.by he had come B.until he came C.when he comes D.before he comes
B
这个句子的意思是 我当时知道我不可能在他到来之前写完作业.（已经发生过了）
这是过去时态 排除CD A的表达不对 没有那样说的

B not until 是直到···才···的意思

Though I couldn't speak,I knew it wasn 't a busy city. i couldn't agree I couldn't help i couldn‘t是什么意思 I ALMOST COULDN'T 还是I COULDN'T ALMOST? i knew i wasn't forgiven是什么意思 i probably couldn't造句 words i couldn t say I couldn't care less. i couldn't help but I couldn't agree more. i couldn't stop thinking I couldn't miss you 英语翻译when i,thought i knew you thinking,that you were true i guess i,i couldn't trust called your bluff,time is up 'cause i've had enough you were,there by my side when i,thought i knew you thinking,that you were true i guess i,i couldn't trus I knew I couldn't nm for very long without feeling tired.I was able to nm for the first ten minutes. I couldn't believe what I -------(see). He couldn't play with candles.I couldn't e . I knew I couldn't finish my homework ( ).A.by he had come B.until he came C.when he comes D.before he comes