he's not tall.so he can't_high.a.jump b.jumping c.jumps
问题描述：
he's not tall.so he can't_high.a.jump b.jumping c.jumps
答
a
can情态动词后加动词原形
答
为你解答.
He's not tall.So he can't （a.jump） high.
他个子不高.所以他跳得不高.
解释：情态动词can的后面必须要用动词原形.