A.aheadB.sinceC.toD.until
A. ahead
B. since
C. to
D. until
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A.asB.whenC.afterD.while
A. as
B. when
C. after
D. while
A.weaponB.wholeC.waterD.wonder
A. weapon
B. whole
C. water
D. wonder
A.guardB.eggC.knowledgeD.big
A. guard
B. egg
C. knowledge
D. big
A.flyB.sillyC.simplyD.city
A. fly
B. silly
C. simply
D. city