Example sentences of "is difficult [verb] [adj] [noun pl] of " in BNC.

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1 Similarly when children have been ill , parental expectations of their behaviour changes , and sometimes it is difficult to re-establish previous patterns of sleep and feeding when a parent is unsure whether the child is fully recovered .
2 It is difficult to obtain precise figures of private sector investment in the inner cities , but there may be reasons to doubt industry 's willingness to commit billions of pounds to inner city developments .
3 Lone-parent families are not a homogeneous group and it is difficult to obtain reliable estimates of the numbers of families and children involved .
4 To say the least , however , it is difficult to grow regular crops of fine juicy pears in local conditions .
5 In form alone there are similarities between certain glass bowls and plain ceramic bowls , but it is difficult to find ceramic equivalents of distinctive glass forms , suggesting that any social and economic symbolism conveyed by the shape and function of such vessels was conveyed equally by the material used , and that there were rigid boundaries between them ; there was not , for instance , a poor man 's version of the glass cone beaker .
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