The farmer was very thankful to the doctor ______ treated his son.
----Why didn’t you come to meet me, Bill? ----Sorry, dear. But I really forgot where I was _____ to meet you.
She still remembers Beijing University, ____________she graduated five years ago.
_______ from what he did, he isn’t a person to depend on..
The students left the room _______all the lights on.
Roses need special care ______they can live through winter.