1 . It was a great honour to be invited to the not-for-profit Tiger________(基地). （根据汉语提示单词拼写）

2 . Other schools might have somewhat different rules_____________(base) on different conditions.

3 . __________ (base) on their expressed thoughts and actual “musicing” behaviors, this text examines the songs they sing, the rhythms…(所给词的适当形式填空)

4 . With the development of Beidou system, there have appeared new businesses________(base)on navigation(导航)services. （所给词的适当形式填空）

5 . There is no point ________ (base) the new company in New York. （所给词的适当形式填空）

6 . From talking robots and video phones to rovers on Mars, technology has become so advanced that the previously impossible seems to occur on a daily __________. (base) (所给词的适当形式填空)