The experienced teachers try their best _____ the younger ones _____experience.
With the help of high technology, more and more new substances ___in the past few years.
It was dark. We decided to ___for the night at a farmhouse.
They would __if food was difficult to find, so they celebrated when they had food.
It was the woman ___had been in prison __stole the money.
He is the only one of the students in our grade who ___ a winner of scholarship for three years.