So far ,we have still got no news of the missing ship.—-I’m sure we will find it one day.

Sally, I’m so worried about tomorrow’sexam that I can’t fall asleep.—_________. You’re sure to pass it.

Positive attitudes can not only _______ one’s confidence but also improve the quality of life.[ ]

This dictionary was not ________to Sarah，so she gave it to her cousin.

All those second-hand goods are sold at ________ before.