it's not suitable ____ this hot weather\A for B to C on D about

it's not suitable ____ this hot weather\A for B to C on D about
it's not suitable ____ this hot weather\
A for B to C on D about

it's not suitable ____ this hot weather\A for B to C on D about
for
be suitable for 适合.

be suitable for 适合....
it's not suitable for this hot weather
不适合这种炎热的天气

选for
be suitable for 适合什么什么
It's not suitable for this hot weather.