The exhibition has been held ______________ World Press Freedom Day annual celebration.
A. on the occasion of
B. on occasion
C. on every occasion
D. on rare occasions
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During wintertime, snow may fall in southern China _______________ .
A. on the occasion of
B. on occasion
C. on every occasion
D. on rare occasions
If you are a Chinese, your stomach may turn ____________ cheese — a food normally accepted in many Western countries.
A. at the sound of
B. at the thought of
C. at the sight of
D. at the smell of
Each team member has a busy schedule, so it would be impracticable to consult them _______________.
A. on the occasion of
B. on occasion
C. on every occasion
D. on rare occasions
Some of the players may, __________, break the rules and be penalized.
A. on the occasion of
B. on occasion
C. on every occasion
D. on rare occasions