______ to computer games, he had no time to go over his lessons. As a result, he failed in all subjects.
A. AddictingB. Being addicted
C. Having addictedD. Addicted
---- Did he give you advice on your work yesterday?
---- Yes. But his advice, as a matter of fact, ______ my difficulty.
A. used toB. related to
C. added toD. belonged to
Mountain climbing ______ be really dangerous at times even though it is challenging and exciting in general.
A. canB. shouldC. shallD. must
The music, ____________ pleasant, was soon well received when it was taken to the stage.
A. soundedB. being sounded C. sounding D. having sounded
----Did the reference give the information you needed?
----Yes, but it, I had to read it entirely.
A. to findB. having foundC. findingD. find
You ________ your son to watch TV for too long hours! See, Mr. Morrison called that he didn’t finish his homework yesterday.
A. are always permitting B. have permitted
C. permit D. permitted
