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. All substances, ___ solids, liquids or gases, are made up of entirely atoms.

A. whether they    B. whether        C. whether are they      D. whether are

All substances,         solids, liquids, or gases, are made up of entirely atoms.

       A．no matter what they                             B．whether

       C．no matter what are they                        D．whether are

All substances, ＿＿＿＿＿ solids, liquids, or gases, are made up of entirely atoms.

A.whether they     B.whether  C.whether are they     D.whether are

All substances, ＿＿＿＿＿ solids, liquids, or gases, are made up of entirely atoms.

A.whether they B.whether  C.whether are they D.whether are