A.that | B.which | C.whether | D.what |
A.due to | B.in addition | C.as to | D.owing to |
A.provided | B.unless | C.though | D.until |
A.that | B.when | C.which | D.where |
A.why | B.when | C.how | D.where |
A.even though | B.on condition that | C. if | D.however |
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