-What’s this?-It’s .
You’ll find________easy to learn it well.
—________do you learn English? —By________vocabulary lists.
—I can’t fall asleep. —You get up and do something________lying in bed.
I was________tired that I couldn’t go on walking.
The sweet smell of the flowers in the garden comes in_______the open window,making us feel in a good mood(心情). A.on B.with C.through