It is dangerous to ______.

(单选题)19.（ ） (单选题)18.（ ） (单选题)17.（ ） (单选题)16.（ ） (单选题)—It’s said that one’s star sign decides his personalities, i (单选题)—Peter, is there anything else you want to know about China? (单选题)—Oh, my God! I can’t find my maths homework.—Have you search (单选题)Stand on the top of the tower, ______ you can see the whole (单选题)A true friend can see the pain in your eyes ______ the other (单选题)The survey on the children ______ that more than five sixths