1 sky

1 to raise

2 to increase

3 to improve

1 tallest

2 highest

3 supreme (court etc)

1 empty

2 air

3 sky

4 in vain

1 air

2 atmosphere

1 a worthless piece of paper (idiom)

1 lit. to fight it out with sb to see who is best (idiom)

2 fig. to cross swords with

3 to lock horns

1 can't recognize tall or short (idiom); doesn't know what's what

1 to feel unconcerned and let matters rest (idiom)

1 the people are gone and the place is empty (idiom)

2 the sight of a deserted place brings old friends to mind

3 the place is deserted

4 the birds have flown