He was a very excellent student before he turned to delinquency.

I have to pay my tuition by next month.

I can't go to college because the tuition is too high.

A beautiful Ilex aquifolium is planted in the garden.

If you rephrase that complex theory in simpler terms, it's just common sense.

His character affects all the people he is involved with.

I can't rest easy until he comes back.

I'm very anxious until he comes back.

I can't rest easy when he doesn't come home.

He is an expert in dermatology.