A.that; when ; which | B.where; that; which | C.that; that; that | D.where; when; that |
A.where | B.when | C.which | D.that |
A.unless | B.in case | C.so long as | D.once |
A.until | B.since | C.while | D.after |
A.as before they did | B.as they regarded before |
C.as they did before | D.as they had before |
A.since | B.unless | C.because | D.though |
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