When I try to understand ________ that prevents so many children from being happy, there seem to be three causes.
A.why it is | B.what it does | C.why it does | D.what it is |
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When I try to understand ________ that prevents so many children from being happy, there seem to be three causes.
A.why it is | B.what it does | C.why it does | D.what it is |