更改橫線下的字.........

8. REVEALS

because
1. -shows- is simple present tense, so is -reveals-
2. -shows- and -reveals- mean the same thing here

Young people want to buy a better home if they have money, a survey conducted by a Hong Kong Polytechnic University professor {shows} / {reveals}.

=

A survey conducted by a Hong Kong Polytechnic University professor {shows} / {reveals}that young people want to buy a better home if they have money.

conducted

邊度有橫線..??
但係一定唔係 buy a better home
會係 wants to have a better place to live with