A.if | B.unless | C.as | D.because |
A.What if | B.As if | C.Only if | D.Even if |
A.but | B.though | C.because | D.while |
A.which | B.she | C.who | D.it |
A.which | B.what | C.that | D.when |
A.that; since | B.that; after | C.since; before | D.when; that |
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