-- Can you imagine ____ (make) great progress in your study with no plan?
-- If you fail to plan, you plan to fail. Success doesn’t happen like magic.
四冲程内燃机工作时，哪个冲程将机械能转化为内能？（ ）
珍惜自己的生命，需要掌握一定的____。学会识别和____危险的情境。学会自我保护的____.
____ ____ ____ do you want to buy?
I will not be late for school ____more.
