1.living in the mountain area has lots of problems,most of (
1.living in the mountain area has lots of problems,most of ( )are hard to solve 2.More than half of the students in this city wanted to be pop stars,( )amazed me. 填关系词
1 living in the mountain area has lots of problems,most of (which )are hard to solve 2 More than half of the students in this city wanted to be pop stars,( which ) amazed me.