今天下午五点之前我必须完成作业 I___ ____my homework ____five o'clock this afternoon.

今天下午五点之前我必须完成作业 I___ ____my homework ____five o'clock this afternoon.
今天下午五点之前我必须完成作业 I___ ____my homework ____five o'clock this afternoon.

今天下午五点之前我必须完成作业 I___ ____my homework ____five o'clock this afternoon.
I must finish my homework before five o'clock this afternoon.

I must finish my homework before five o'clock this afternoon.

I must finish my homework before
望采纳，有何问题，可随时询问

was doing at
顶一下吧