[ ]the people were having.a,what fun b,how fun c,what a fun

[ ]the people were having.a,what fun b,how fun c,what a fun ______ picnics are!A.What fun B.What a fun C.How fun D.How f __ we had!A,How a fun B,What fun C,What a fun D,How fun fun they are having!Let's join them.A.What B.How C What a D. ( ) ____ great fun the trip is!A.what B.what a C.how D.how a ______ great fun the trip is!A what B what a C How D how a _____it is to go skiing in winter A.what a fun B.how fun C.w ______great fun the party is!（感叹句)A.how B.what C.how a D.wha _____ it is to visit the science museum!A.What fun B.How fun ____ they had in the park A how fun B what fun ( ) great fun we had last night!A What B What a C How D how what a fun和how fun的用法