题目内容：

She did _____she could ____ the lost child.He found his parents with the help of the police.A.that
A.that;take care of B.and;take care of C.what;to take care of D.what;take care of

优质解答

what 引导宾语从句,what she could 是did 的宾语
to 表目的
简写就是She did sth to do sth