The Expo park should be ______ from anywhere in the city of Shanghai within 90 minutes by bus, subways and special taxis.
Alice received an invitation from her boss,________ came as a surprise.
I have bought two ballpens,________ writes well.
Is ________ some German friends visited last week?
Is there anyone in your class ________ family is in the country?
The engineer ________ my father works is about 50 years old.