【C17】A．untilB．sinceC．afterD．before

It was not long _______ I forgot it all.A、thenB、whenC、afterD、before

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【C5】A．untilB．onceC．afterD．since

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This area has been free from Foot—and—Mouth Disease （) two years.A．forB．inC．afterD．befor

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【39】A．forB．inC．afterD．before

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Hardly had we got on the bus______it began to rain.A．whenB．sinceC．butD．before

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A. until afterB. ever sinceC. so thatD. long before

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you are leaving tomorrow we can have dinner together tonight.A.ForB.SinceC.BeforeD.Whil

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