The Sanlu Milk Powder event is a clear indication that food safety is a big problem; nobody can ___ all foods are secure to us, but we are sure that the situation is turning for the better.
It’s the fifth time ______ late this term.
We found Mary’s brother to have _____ more story books than Ann’s.
If you _____ the medicine you _____ better now.
In fact she was _____ of softball, tennis and track.
_____ a reply, he decided to write again.