用所给词的适当形式填空。(20分)
（1）Chongqing is one of the ________ (big)cities in China.
（2）Would you like________ (have) a cup of tea?
（3）John often goes________ (swim) in summer.
（4）Let's________(fly) to Hong Kong.
（5）We are going to many________ (place) next week.