Life teaches us not to regret over yesterday, for it ________ and is beyond our control.
After the exam, we'll have________ holiday.
They are those _________ bags.Please put them on the bus.
--- How many workers are there in your factory? --- There are two ___________.
---What do you think of the _______ the Moonlight Sonata by Beethoven? --- It sounds really wonderful.
There is not enough _________ in the corner for the fridge.