A.After | B.In | C.Since | D.From |
A.when | B.in which | C.at which | D.which |
A.that | B.which | C.and | D./ |
A.that | B.who | C.what | D.when |
A.whether, whether | B.that, that | C.that, whether | D.whether, that |
A.those | B.why | C.which | D.How |
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