Medical researchers reached the conclusion long ago that smoking ______ harmful to a person’s health. A. is B. be C. being D. was
举一反三
- It is known to us that smoking is harmful to one's health.____________________________, smoking is harmful to one's health.
- Smoking is harmful one's health.
- （）we know, smoking is harmful for our health. A: So far as B: So far C: So long as D: As to
- ________ is bad for his health. A: Mike smoking B: Mike's smoking C: Mike's being smoking D: Mike smokes
- ___ we know, smoking is harmful to one's health A: when B: that C: which D: as