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

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

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

52._________A. attendingB. registeringC. inviting

52._________A.. aggressionB. anxietyC. pressureD.

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

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