Didn't they come to the party last week?

上周他们没来参加聚会吗?Didn’t they come to the party last week? —Yes. They didn’t want to come with us at first, but then we ____ persuade them.A. would B. couldC. were able to D. had to能解释一下句意吗不， （他们来了）。开始他们不想来，但是后来我们劝说他们了。选C只有C合理， 经过努力能...