Please do not feed the fish; they _____ die if they eat too much.
His performance in the play didn't reach the required standard by the director, __, he failed.
----It is ______ that self-protection education is required at school.----I agree. We always have a large course ______ months.
If he is once ______ laughing, he finds ______ difficult to stop.
The hotel porter ______ anybody who wasn't wearing a collar and tie.
Nothing ______ stop us from ______ this plan.