We should take good care of the elderly, as they are ______ to the sudden change of weather.

 She can speak _______ in front of Mack, but she can’t eat ______ in his restaurant.

The girl’s _____ voice and excellent performance made her stand out in the singing contest.

It’s hard for the young people to imagine what _____ conditions their parents once lived under.

Time was passing and we were getting       because we would have to spend the night in the cave if no one came to the rescue.