Example sentences of "difficult it be [to-vb] [adj] [noun] " in BNC.

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1 The controversy that has surrounded Brenner 's results illustrates how difficult it is to draw firm conclusions about the role of any one factor , such as unemployment , on a state as loosely defined as ‘ health ’ .
2 From then on he began to understand how difficult it is to control spastic muscles .
3 However difficult it is to measure short-term effects of library instruction , it is far more difficult to measure the long-term effects of the instruction given .
4 Do you know know difficult it is to make this thing go slowly ? ’
5 In itself this elusiveness is testimony to just how enormously difficult it is to find practical solutions to Britain 's economic problems .
6 The initial trials quickly revealed how difficult it is to develop one set of forms which can be used to assess the progress of all children
7 The initial trials quickly revealed how difficult it is to develop one set of forms which can be used to assess the progress of all children .
8 My chairman knows more than anyone how difficult it is to obtain good quality samples of natural conversational data .
9 The senator had just told me how difficult it was to extract any sense from his son , yet apparently Rickie was not so far gone as the senator had suggested .
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