question: in a 13 weeks subchronic dermal study rats were exposed for 13 weeks at 0, 200, 600 and 2000 mg/kg bw/day.
Capitalize this past sentence correctly.
A: In a 13 weeks subchronic dermal study rats were exposed for 13 weeks at 0, 200, 600 and 2000 mg/kg bw/day.

question: 4. what purpose does the information notice slip (coupon) serve?
Capitalize this past sentence correctly.
A: 4. What purpose does the information notice slip (coupon) serve?

question: when the long path work has been done to the point that it bores, depresses, or satiates him, admission must be made that he had better leave it for a while.
Capitalize this past sentence correctly.
A: When the Long Path work has been done to the point that it bores, depresses, or satiates him, admission must be made that he had better leave it for a while.