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.
This is the best way _____ the river from _____ .
Last year, Bob earned _____ his brother, who has a better job.
____ I know, the Chinese team got 51 gold medals in the 29th Olympics.
_____ made us proud was ______more than 98% of our classmates had been admitted to key universities.
She wanted to know _____.