A.when; which | B.that; which | C.which; that | D.when; that |
A.then | B.where | C.when | D.Which |
A.what, what | B.where, what | C.what, whether | D.where, whether |
A.Even if | B. As far as | C.If only | D. So long as |
A.whether | B.after | C.if | D.until |
A.why; that | B.why; because |
C.which; that | D.which; because |
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