The cost of buying a house in Beijing is much higher , but Beijing is _______in traffic.
--- Please ask her if she ___ to the party tomorrow. If she ___, let me know. ---OK.
You must be very tired. Why not _____ a rest?
______ good boy he is! We have never seen such a good boy.
The Science Museum interests me a lot.. I enjoy ______there.
I have two sisters. One is in Beijing, ______is in Lanzhou.