Yes, of coarse.
Yes.
"there come"
No: it requires an object for the verb "open". It would be correct to say something like "We must not open burning packages." Yes, if it means "We must not open (our shop, for example) while it is on fire.
Keep Your Eyes Open - 2002 is rated/received certificates of: USA:PG-13
no
Cats can keep their eyes open without blinking for an average of 30 to 40 seconds.
Actually I have kept my eyes open for about four minutes, but I had contacts in. With out contacts in I can only keep my eyes open for 45 seconds.
reading your question precisely, if you sneeze, Ican keep my eyes open no problem. My friend told me if you sneeze with your eyes open they pop out
no, we do not have to..=)
The sentence "Whether he was duplicitous regarding his character is open to question" is grammatically correct and complete.
To not keep your eyes closed
Keep watching with open eyes.