`19,` ________________ , overusing it can negatively affect one's mental and emotional health. A. However social media impacts may be harmless B. Although harmless social media impacts may be C. Harmless as social media impacts may be D. Harmless social media impacts may be but

________________ , overusing it can negatively affect one's mental and emotional health.

A. However social media impacts may be harmless

B. Although harmless social media impacts may be

C. Harmless as social media impacts may be

D. Harmless social media impacts may be but

cấu trúc: adj/adv+as/though+S+may+ V+O. (mđề trạng ngữ)