—I'm always afraid of speaking in public.

—_______. You can do it well. [ ]

A. Not afraid.

B. Take it easy.

C. You are silly.

D. Good luck.

Stressful environment leads to unhealthy behaviors such as poor eating habits, which _____ increase the risk of heart disease.

A．by chance

B．in other words

C．in return

D．in turn