2 . Many people find themselves __________ (stick) in jobs without a hope of advancement, so they feel a need to get more education __________ (get ahead) at work.

A．sticking; to get	B．being stuck; getting ahead
C．being stuck; getting ahead	D．stuck; to get ahead

3 . Before the manned mission, the Tianzhou-4 robotic cargo spaceship will lift off in May _____________ (transport) supplies, experimental materials and fuel to the Tiangong station. (所给词的适当形式填空)