I’m glad ____________ to look around your research center.

时间:2021-04-08 09:54来源:未知作者:admin 点击: 次

4.I’m glad ____________ to look around your research center. A. to allow B. having allowed C. to be allowed D. being allowed

4.I’m glad ____________ to look around your research center.

A. to allow

B. having allowed

C. to be allowed

D. being allowed

(责任编辑：admin)

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