_________(52)A.to B.onC.in D.back

The teacher said， “Stop ______”。 So we stopped _______.A. to talk…to readB. talking…to

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I’m glad ____________ to look around your research center.A、to allowB、having allowedC、to

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52._________A. attendingB. registeringC. inviting

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52._________A.. aggressionB. anxietyC. pressureD.

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_________(58)A.by B.onC.in D.for

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I have no objection__________ your story again.A.to hearB.to hearingC.to

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I’m glad ____________ to look around your research center.A to allowB having allowedC to

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