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his telephone number or e-mail address, she had some difficulty in touch with Jo

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his telephone number or e-mail address, she had some difficulty in touch with Jo

______ his telephone number or e-mail address, she had some difficulty ____ in touch with John.

A.Not knowing; getting                         B.Not having known; to get

C.Knowing not; to get                         D.Having not known; getting

试题答案

A