Question: they're durable, but lightweight - and built to last longer than any labeling tool you've used.
Answer: --> They're durable, but lightweight - and built to last longer than any labeling tool you've used.

Question: 21 do not handle, do not taste, do not touch,
Answer: --> 21 Do not handle, do not taste, do not touch,

Question: it was no use him taking a run in a car to admire the local scenery; he just fell asleep and didn't see anything, except in the brief intervals when the car stopped, when he might open his eyes to identify some landmark known to him.
Answer:
--> It was no use him taking a run in a car to admire the local scenery; he just fell asleep and didn't see anything, except in the brief intervals when the car stopped, when he might open his eyes to identify some landmark known to him.