There are these four ways of answering questions. Which four?

There are questions that should be answered categorically [straightforwardly yes, no, this, that]. There are questions that should be answered with an analytical (qualified) answer [defining or redefining the terms]. There are questions that should be answered with a counter-question. There are questions that should be put aside. These are the four ways of answering questions.

what are these ? These are ( )? we've bought [ ]desks for the children there,and[ ] these children are new. what are these?these are your legs. There have there are Are these their erasers? these eggs are ___ 是不是There is a pen and a pencil但是是These are a pen and a pencil? whose pens are these?还是whose are these pen?区别？ These girls are _____ (American) . Are these ______(they) books?