WHEN / HE / MAKE UP HIS MIND / HE / RARELY / CHANGE.A WHEN HE...
Câu 20/ When / he / make up his mind / he / rarely / change.
a
When he has made up his mind, he has rarely changed it.
b
When he has made up his mind, he rarely changes it.
c
When he makes up his mind, he has rarely changed it.
d
When he makes up his mind, he rarely changes it