question: many people with acute leukemia can be cured.
Capitalize this past sentence correctly.
A: Many people with acute leukemia can be cured.

question: more recently, they have developed an automated technique that makes it possible to separate hours making chains of up to 200 nucleotides in length.
Capitalize this past sentence correctly.
A: More recently, they have developed an automated technique that makes it possible to separate hours making chains of up to 200 nucleotides in length.

question: at this time, we express our deep gratitude to helen metyolkin, share with us your photos from the personal archive.
Capitalize this past sentence correctly.
A: At this time, we express our deep gratitude to Helen Metyolkin, share with us your photos from the personal archive.