—Must we keep the window open all the time? A. No, you mustn’t B. No, you can’t. C. No, you don’t have to.
What _______ your father do when it’s ________?
—Hello. Who is speaking ?—Hi,Ann._________ Mary.
—How’s it going with you ? —______.
—______ is the weather in Beijing ?—_________ windy.
Lily is ______ in Beijing.She ______ her parents very much.