The manager is talking with his secretary _____ the telephone. They usually keep in touch _____ telephone.
A.by ;on | B.through; by | C.on; on | D.by ;with |
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The manager is talking with his secretary _____ the telephone. They usually keep in touch _____ telephone.
A.by ;on | B.through; by | C.on; on | D.by ;with |
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