The military officer plays an important role as a leader in the army.

He was promoted to lieutenant.

My grandfather used to plow the rice fields with a horse in the old days.

What does this line mean?

There is a serious lack in that contract.

I participate in blood donation every year.

I donate blood every year.

I go to donate blood every month.

I donate blood every year.

He is suffering from symptoms of abulia.