I _____ sooner but I didn’t know that they were waiting for me．

A．had come

B．was coming

C．would come

D．would have come

如果GDP一定时期以来呈负增长，当负增长速度逐渐减缓并呈现向正增长转变的趋势时，表明恶化的经济环境逐步得到改善，证券市场走势也将由下跌转为上升。( )

A．

B．

C．