On April Fools’ Day, people in Western countries play tricks on each other. However, there is one rule for the jokes: they ________ be fun and _______ hurt anyone’s feelings.
A. should; oughtn’t B. can; cannot C. must; shouldn’t D. need; mustn’t
On April Fools’ Day, people in Western countries play tricks on each other. However, there is one rule for the jokes: they ________ be fun and _______ hurt anyone’s feelings.
A. should; oughtn’t B. can; cannot C. must; shouldn’t D. need; mustn’t
C