Local villagers ______the doctors with the people ______ in the bus crash.

However, at times this balance in nature is ______, resulting in a number of unforeseen effects.

We didn’t enjoy the day______ the weather was so bad.

We have some bread, but we have ________ milk. Let’sbuy some milk.

He was worried, because he lost his bag ______ his passport, ID card and a lot of money.