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Before 2003, there was no direct airline         Taiwan and the mainland.

Before 2003, there was no direct airline         Taiwan and the mainland.

A．in               B．at                C．along             D．between

Before 2003, there was on direct airline__________ Taiwan and the mainland.

A. along         B. in              C. between           D. at

Before 2003, there was no direct airline          Taiwan and the mainland.

A. along        B. in       C. between      D. at