Brain Game: Not Quite the World's Smallest Crossword #4

Here's a new entry in our Not-Quite-The-World's-Smallest-Crossword series. Three clues across, another three down, and you're done. Unlike most other crosswords, you can probably do this one in your head:

ACROSS:
1. see _____
4. long _____
5. mountain _____
 
DOWN:
1. _____ sack
2. old _____
3. gee!

Click here for the answer.