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