Is this company _____ you visited Mr. Wang last week?
________ is quite natural,a beginner can't read the books written in English very quickly.
—Do you regret paying 500 dollars for your necklace? --No, I would gladly pay__________ for it.
__________ it rain, the crops_____________.
--You forgot your keys when you left home in the morning.--Good heavens,___________.
It is impossible for ______ little children to do ______ much work in ______ a short time.