A.which | B.where | C.that | D.when |
A.which | B.that | C.where | D.in which |
A.How is it that | B.How is that | C.What is it that | D.What it is that |
A.one of which | B.one of who | C.one of whom | D.one of them |
A.how | B.what | C.whether | D.no matter how |
A.unless | B.until | C.when | D.while |
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