______ healthy food is good for our health.

The man who wasofkilling four children in the care center was arrested and sentenced to death．

I wonder why you failed so many of the questions. Only the first question was difficult, but the rest, I thought, ______ very easy.

Only ￡ 5．It isvery cheap．

Hurry up ! The train _____ . You know it _____ at 8:30 a.m .