1. Do you have... ? 2. Where can I find... ? 3. I'm just browsing. (browsing = looking casually) 4. I'm looking for... 5. How much is this? 6. Is this on sale? 7. Can I try it on? (use this to ask if you can put on clothing to see if it's the right size) 8. I'll take it! 9. Do you take credit cards? 10. I'd like to return/exchange this.
Electricity: The gravity cell, while cheap and effective, is inconvenient for general use, owing to the fact that it cannot be easily transported, and the dry cell has largely supplanted all others, because of the ease with which it can be taken from place to place. This cell consists of a zinc cup, within which is a carbon rod; the space between the cup and rod is packed with a moist paste containing certain chemicals. The moist paste takes the place of the liquids used in other cells.