A.when | B.no matter | C.if | D.whether |
A.that | B./ | C.what | D.which |
A.which | B.that | C.who | D.whom |
A.what, what | B.where, which | C.from which, which | D.in which, what |
A.in which | B.for whom | C.with which | D.of whom |
A.that | B.what | C.knowledge | D.which |
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