A.What | B.How | C.Why | D.Where |
A.what; when | B.that; which |
C.what; which | D.which; that |
A.so | B.and | C.but | D.or |
A.how | B.as though | C.as long as | D.however |
A.which | B.what | C.where | D.whether |
A.except | B.except for | C.except that | D.except when |
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