The fact is ______ he has not been seen recently.

The Canadian friends from our school have given us a lot of books, few of______ a bit difficult for us Chinese students.

Only latelyaboutthe dark secrets behind the seemingly-happy marriage of the golf star Tiger Woods.

________ a job, you should highlight your experience and skills.

Though suffering a serious injury, Rafael Nadal refused to _______ the game and went on.