运动员冲过终点线。

The athlete ___crosses the finish line.

他每天都要穿过这座桥去上班。

He ___crosses this bridge every day to go to work.

老师用红线在我的作业上划掉了错误。

The teacher ___crosses out mistakes in my homework with red lines.

你不应该反对老板的决定，否则会有麻烦。

You shouldn't ___cross your boss's decisions, or there will be trouble.

科学家将这两种狗杂交以培育出更健康的品种。

Scientists ___cross these two dog breeds to develop a healthier variety.