The 19th National Congress of the CPC（中共十九大）_____in Beijing last year．
Our country has been into a new era（时代） since then．（ ）
A．heldB．was heldC．has heldD．had held
The 19th National Congress of the CPC（中共十九大）_____in Beijing last year．
Our country has been into a new era（时代） since then．（ ）
A．heldB．was heldC．has heldD．had held
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