A.since; before | B.after; when | C.before; since | D.that; when |
A.what | B.that | C.anything | D.which |
A.that | B.whether | C.how | D.what |
A.even if | B.unless | C.if | D.though |
A.why | B.how | C.when | D.that |
A.on condition that | B.in case | C.even if | D.as though |
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