A.whether | B.when | C.as long as | D.in case |
A.while | B.unless | C.when | D.until |
A.and, and | B.or, or | C.and, or | D.or, and |
A.Since | B.Before | C.Until | D.After |
A.that | B.which | C.that what | D.what that |
A.why | B.whether | C.how | D.since |
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