【单选题】Teaching as a career is ______ to many people owing to the long holidays. [ ]
【多选题】下列哪种植物生长调节剂可用于番茄保花保果?
【单选题】Owing to the heavy fog, our plane was______two hour.
【多选题】社会营销观念是市场营销观念的深入,它兼顾了( )利益。
【单选题】They ____ us in our discussion, but owing to more important business they couldn’t come