It was in the small house ___ was built with stones by his father ___he spent his childhood .
Could you drive me to the bookstore at noon if________? A. it’s convenient of you B. it’s convenient to you C you are convenient D. you will be convenient
Children should be taught at an early age to keep ______even in a difficult situation.
What great trouble we had _________ where his house was.
--Shall I open the window? --I’d rather _________.
_____ to strong sunlight for a long time will do harm to your skin.