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單項選擇題

Mr. Jones, this is Sean, an English teacher from the United States.（）

A.What can I do for you?
B.Nice to meet you.
C.Please keep in touch.
D.Haven't seen you for ages.

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單項選擇題

Mr. Jones（）in the company for twenty years by the end of next month

A.will work
B.will have worked
C.has worked
D.would work

單項選擇題

Mr. John was busy,（）he could not come.

A.but
B.therefore
C.and
D.nor