_______ from father to son, the music has not changed for centuries.
A. Passing B. To pass
C. Having passed D. Passed
—Have all the mysteries been cleared up?
— Almost. But ______ only one question ______.
A. there remains; answered
B. it remains; to be answered
C. there remains; to be answered
D. it remains; answered
Please tell me the after service of the computer; I’m worried about a breakdown sometime．
A．there being B. it being
C. there is D. it is
Walter offered us a lift when he was leaving the office, but our work ______, we didn’t accept the offer.
A. not being finished B. having not been finished
C. had not been finished D. not having finished
A Nepal plane crashed in bad weather, ________ all 18 on board.
A. killing B. killed
C. having killed B. to kill
---How is the man injured in the earthquake?
---The doctor said if _________ in a proper way, he was likely to be saved.
A. treated B. treating
C. is treated D. to be treated
