老师指出我的作文里有几个缺乏适当标点的连写句。

The teacher pointed out several ___run-on sentences in my essay that lacked proper punctuation.

击球手抓住机会完成了一次漂亮的长打跑垒，直接冲到了三垒。

The batter seized the chance and made an impressive ___run-on all the way to third base.