They be.他们是。theypron.他们They played a good game.他们做了一个很好的游戏They drove the sheep in.他们把羊赶进去。They are afraid to swim.他们不敢游泳。They are evenly matched.两队都旗鼓相当。They threatened revenge.他们威胁着要报复。They got a rich harvest.他们获得丰收。They stormed the castle.他们向城堡发动猛攻。they moved it by inches.他们一点一点地移动。They were duly sworn in.他们正式宣誓就职。They seek to make peace.他们设法讲和。