Having tried hard several times, they finally _______ the hope of finding an effective way to save the dying man.

French is _______ difficult to learn.

________ woman with sunglasses is _______ English teacher in New Star High School.

The young man, ________ several attempts to beat the world record in high jumping, decided to have another try.[ ]

______ I’m concerned about most is ______ we can collect a huge amount of money in such a short time.