do you know what Beibei (stands for还是stand for)

问题描述:

do you know what Beibei (stands for还是stand for)
2.doing exercise can build ourselves up还是build us up

Do you know what Beibei (stands for
因为Beibei是第三人称单数,所以用stands
Doing exercise can build ourselves up.
运动能使我们自己强壮.
Doing exercise can build us up
运动能使我们强壮.
两者都可以,第一种更好点