As we all know,junk food ____________________(对……有害)our health.
The doctor told him to ___________________(与……保持距离)rich food,alcohol and tobacco.
________________(说实话),I don't think we have a chance of winning.
The students in my class _______________(意见一致) that the exam was difficult.
You must keep to the rules ________________(即使)you think they're unfair.