A.as | B.than | C.like | D.white |
A.besides | B.except | C.except for | D.except that |
A.not .. .but... | B.either.. .or... | C.neither.. .nor... | D.whether.. .or... |
A.whether | B.unless | C.if | D.while |
A.If | B.Where | C.That | D.Whether |
A.whether | B.if | C.how | D.where |
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