What （ ）they?They （ ）chick.( 用be,have,has填空)

what they what()they()they()there?what()they()they()there?[do] what do they do they They shall do what they What（ ）they doing——They（ ）studying. （what） are they useful （for）? What are they like?（中文） （how/what）clever boys they are what are they?（怎么回答） what do they what do they do? what are they What do they what do they what did they What are they? What do they need? What are they doing?