A.whether, whether | B.that, that | C.that, whether | D.whether, that |
A.those | B.why | C.which | D.How |
A.what | B.that | C.who | D.Whom |
A.so that | B.even if | C.before | D.Because |
A.if | B.when | C.as | D.Since |
A.when | B.whether | C.what | D.where |
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