“______, we believe the overall policy stand to support a two-way opening of the

题干

“______, we believe the overall policy stand to support a two-way opening of the Chinese capital marked and it will continue this year.” he added.

A．As some bottlenecks are difficult to be broken

B．As some bottlenecks are difficult to break

C．Difficult as some bottlenecks are to be broken

D．Difficult as some bottlenecks are to break

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