如何编写LINQ查询来执行此操作

IQueryable<SomeType> result = (from x in Context.XXX select x);

现在我需要做的是以下工作(编写伪代码,我需要实际代码):

foreach(var i in items)
{
  // Where the object "i" has 2 properties
  // 1) i.Operator (values of which can be AND or OR)
  // 2) i.SomeID (values of which can be 1 .. 10)

  // I need to build the LINQ query with "ands" and "ors" based on the i's in this foreach
}