Question

I pay for my children's tuition fees. (begin with-He, in simple present and
Present continues​

Answer 1

Explanation:

since you are good to begin with he ur answer will be He pays for his children's tuition fees(simple present) V1+s or es

he is paying for his children's tuition fees (present continuous) is or am or +V1 ing(is/am/are+V1+ing)

or

1 He pays his children's tuition fees

2 He is paying his children's tuition fee