Example sentences of "must [be] [adj] enough [verb] [prep] " in BNC.

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1 It must be practical enough to reach between rocks and plants .
2 The edging for a gravel drive must be deep enough to keep in the gravel which is below ground level , and high enough to prevent the gravel being spread on to the garden .
3 If an animal is a parent , it must be good enough to survive at least to adulthood .
4 Furthermore , since they are not directives but guidelines they must be flexible enough to allow for teacher participation and the exercise of initiative so that teachers can follow their course in reference to the bearings provided .
5 It is clear that if a method of examining use is to be devised which does not lean entirely upon the librarian 's judgement , that method must be sophisticated enough to take into account the many variable factors .
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