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46.A.changed             B.started          C.provided       D.organized

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45.A.when               B.while           C.since         D.because

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44.A.customers           B.bosses          C.workers       D.staff

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43.A.surprise             B.delight          C.interest        D.horror

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42.A.special              B.available         C.closed        D.reliable

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41.A.And                B.Thus           C.So           D.But

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40.A.accommodation       B.information      C.technology     D.services

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39.A.In addition           B.Therefore        C.On the contrary  D.As well

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38.A.factories            B.trees           C.businesses     D.hospitals

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37.A.built               B.designed        C.intended       D.lined

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